diff --git a/docs/03-handling-exceptions.md b/docs/03-handling-exceptions.md
index 490ad053d..a006bb8a0 100644
--- a/docs/03-handling-exceptions.md
+++ b/docs/03-handling-exceptions.md
@@ -44,7 +44,7 @@ The code above generates the following output:
 ```no-highlight
 Array
 (
-    [__root__] => All the required rules must pass for "The Respect Panda"
+    [__root] => All the required rules must pass for "The Respect Panda"
     [alnum] => "The Respect Panda" must contain only letters (a-z) and digits (0-9)
     [lowercase] => "The Respect Panda" must contain only lowercase letters
 )
@@ -69,7 +69,7 @@ try {
 	    ->assert(
 		    'The Respect Panda',
 			[
-			    '__root__' => 'The given input is not valid',
+			    '__root' => 'The given input is not valid',
 			    'alnum' => 'Your username must contain only letters and digits',
 			    'lowercase' => 'Your username must be lowercase',
 			]
@@ -84,7 +84,7 @@ The code above will generate the following output.
 ```no-highlight
 Array
 (
-    [__root__] => The given input is not valid
+    [__root] => The given input is not valid
     [alnum] => Your username must contain only letters and digits
     [lowercase] => Your username must be lowercase
 )
@@ -100,7 +100,7 @@ use Respect\Validation\Validator as v;
 
 $validator = v::alnum()->lowercase();
 $validator->setTemplates([
-    '__root__' => '{{name}} is not valid',
+    '__root' => '{{name}} is not valid',
     'alnum' => 'Usernames must contain only letters and digits',
     'lowercase' => 'Usernames must be lowercase',
 ]);
diff --git a/library/Message/StandardFormatter.php b/library/Message/StandardFormatter.php
index 5e007aa8f..7b4550436 100644
--- a/library/Message/StandardFormatter.php
+++ b/library/Message/StandardFormatter.php
@@ -99,7 +99,7 @@ public function array(Result $result, array $templates, Translator $translator):
     {
         $selectedTemplates = $this->selectTemplates($result, $templates);
         $messages = [
-            '__root__' => $this->renderer->render($this->getTemplated($result, $selectedTemplates), $translator),
+            '__root' => $this->renderer->render($this->getTemplated($result, $selectedTemplates), $translator),
         ];
 
         $children = [];
@@ -120,7 +120,7 @@ public function array(Result $result, array $templates, Translator $translator):
         }
 
         if (count($children) === 0 || $this->isFinalTemplate($result, $selectedTemplates)) {
-            return [$result->path ?? $result->id => $messages['__root__']];
+            return [$result->path ?? $result->id => $messages['__root']];
         }
 
         if ($result->path !== null) {
@@ -172,7 +172,7 @@ private function getTemplated(Result $result, array $templates): Result
             return $result;
         }
 
-        foreach ([$result->path, $result->name, $result->id, '__root__'] as $key) {
+        foreach ([$result->path, $result->name, $result->id, '__root'] as $key) {
             if (!isset($templates[$key])) {
                 continue;
             }
@@ -211,7 +211,7 @@ private function isFinalTemplate(Result $result, array $templates): bool
             }
         }
 
-        return isset($templates['__root__']);
+        return isset($templates['__root']);
     }
 
     /**
diff --git a/library/Validator.php b/library/Validator.php
index 23ebee95c..2f8f13964 100644
--- a/library/Validator.php
+++ b/library/Validator.php
@@ -81,9 +81,9 @@ public function assert(mixed $input, array|string|Throwable|callable|null $templ
         if (is_array($template)) {
             $templates = $template;
         } elseif (is_string($template)) {
-            $templates = ['__root__' => $template];
+            $templates = ['__root' => $template];
         } elseif ($this->getTemplate() != null) {
-            $templates = ['__root__' => $this->getTemplate()];
+            $templates = ['__root' => $this->getTemplate()];
         }
 
         $exception = new ValidationException(
diff --git a/tests/feature/GetMessagesShouldIncludeAllValidationMessagesInAChainTest.php b/tests/feature/GetMessagesShouldIncludeAllValidationMessagesInAChainTest.php
index e391be986..fed9dca02 100644
--- a/tests/feature/GetMessagesShouldIncludeAllValidationMessagesInAChainTest.php
+++ b/tests/feature/GetMessagesShouldIncludeAllValidationMessagesInAChainTest.php
@@ -20,7 +20,7 @@ function (): void {
             ->assert(['username' => 'u', 'birthdate' => 'Not a date', 'password' => '']);
     },
     [
-        '__root__' => 'All the required rules must pass for `["username": "u", "birthdate": "Not a date", "password": ""]`',
+        '__root' => 'All the required rules must pass for `["username": "u", "birthdate": "Not a date", "password": ""]`',
         'username' => 'The length of username must be between 2 and 32',
         'birthdate' => 'birthdate must be a valid date/time',
         'password' => 'password must not be empty',
diff --git a/tests/feature/GetMessagesTest.php b/tests/feature/GetMessagesTest.php
index a18315667..1356793d2 100644
--- a/tests/feature/GetMessagesTest.php
+++ b/tests/feature/GetMessagesTest.php
@@ -20,16 +20,16 @@
             ->key('schema', v::stringType()))
         ->assert(['mysql' => ['host' => 42, 'schema' => 42], 'postgresql' => ['user' => 42, 'password' => 42]]),
     [
-        '__root__' => 'All the required rules must pass for `["mysql": ["host": 42, "schema": 42], "postgresql": ["user": 42, "password": 42]]`',
+        '__root' => 'All the required rules must pass for `["mysql": ["host": 42, "schema": 42], "postgresql": ["user": 42, "password": 42]]`',
         'mysql' => [
-            '__root__' => 'All the required rules must pass for mysql',
+            '__root' => 'All the required rules must pass for mysql',
             'host' => 'host must be a string',
             'user' => 'user must be present',
             'password' => 'password must be present',
             'schema' => 'schema must be a string',
         ],
         'postgresql' => [
-            '__root__' => 'All the required rules must pass for postgresql',
+            '__root' => 'All the required rules must pass for postgresql',
             'host' => 'host must be present',
             'user' => 'user must be a string',
             'password' => 'password must be a string',
diff --git a/tests/feature/GetMessagesWithReplacementsTest.php b/tests/feature/GetMessagesWithReplacementsTest.php
index b2c2c717f..8e743e7f1 100644
--- a/tests/feature/GetMessagesWithReplacementsTest.php
+++ b/tests/feature/GetMessagesWithReplacementsTest.php
@@ -49,16 +49,16 @@ function (): void {
             );
     },
     [
-        '__root__' => 'All the required rules must pass for `["mysql": ["host": 42, "schema": 42], "postgresql": ["user": 42, "password": 42]]`',
+        '__root' => 'All the required rules must pass for `["mysql": ["host": 42, "schema": 42], "postgresql": ["user": 42, "password": 42]]`',
         'mysql' => [
-            '__root__' => 'All the required rules must pass for mysql',
+            '__root' => 'All the required rules must pass for mysql',
             'host' => '`host` should be a MySQL host',
             'user' => 'Value should be a MySQL username',
             'password' => 'password must be present',
             'schema' => 'schema must be a string',
         ],
         'postgresql' => [
-            '__root__' => 'All the required rules must pass for postgresql',
+            '__root' => 'All the required rules must pass for postgresql',
             'host' => 'host must be present',
             'user' => 'user must be a string',
             'password' => 'password must be a string',
diff --git a/tests/feature/Issues/Issue1033Test.php b/tests/feature/Issues/Issue1033Test.php
index 246c30cc1..a8994bb6e 100644
--- a/tests/feature/Issues/Issue1033Test.php
+++ b/tests/feature/Issues/Issue1033Test.php
@@ -17,7 +17,7 @@
       - "B" must be equal to 1
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `["A", "B", "B"]` must be valid',
+        '__root' => 'Each item in `["A", "B", "B"]` must be valid',
         0 => '"A" must be equal to 1',
         1 => '"B" must be equal to 1',
         2 => '"B" must be equal to 1',
diff --git a/tests/feature/Issues/Issue1289Test.php b/tests/feature/Issues/Issue1289Test.php
index 9edf422d7..837e32ac7 100644
--- a/tests/feature/Issues/Issue1289Test.php
+++ b/tests/feature/Issues/Issue1289Test.php
@@ -54,11 +54,11 @@
       - description must be a string value
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `[["default": 2, "description": [], "children": ["nope"]]]` must be valid',
+        '__root' => 'Each item in `[["default": 2, "description": [], "children": ["nope"]]]` must be valid',
         0 => [
-            '__root__' => 'These rules must pass for `["default": 2, "description": [], "children": ["nope"]]`',
+            '__root' => 'These rules must pass for `["default": 2, "description": [], "children": ["nope"]]`',
             'default' => [
-                '__root__' => 'Only one of these rules must pass for default',
+                '__root' => 'Only one of these rules must pass for default',
                 'stringType' => 'default must be a string',
                 'boolType' => 'default must be a boolean',
             ],
diff --git a/tests/feature/Issues/Issue1333Test.php b/tests/feature/Issues/Issue1333Test.php
index af3f45e63..731611f77 100644
--- a/tests/feature/Issues/Issue1333Test.php
+++ b/tests/feature/Issues/Issue1333Test.php
@@ -16,7 +16,7 @@
       - User Email must be a valid email address
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for User Email',
+        '__root' => 'All the required rules must pass for User Email',
         'noWhitespace' => 'User Email must not contain whitespaces',
         'email' => 'User Email must be a valid email address',
     ]
diff --git a/tests/feature/Issues/Issue1334Test.php b/tests/feature/Issues/Issue1334Test.php
index 411a55c1b..eceba7ef9 100644
--- a/tests/feature/Issues/Issue1334Test.php
+++ b/tests/feature/Issues/Issue1334Test.php
@@ -35,28 +35,28 @@ function (): void {
         - street must be a string
     FULL_MESSAGE,
     [
-        '__root__' => 'These rules must pass for `[["region": "Oregon", "country": "USA", "other": 123], ["street": "", "region": "Oregon", "country": "USA"], ["s ... ]`',
+        '__root' => 'These rules must pass for `[["region": "Oregon", "country": "USA", "other": 123], ["street": "", "region": "Oregon", "country": "USA"], ["s ... ]`',
         'each' => [
-            '__root__' => 'Each item in `[["region": "Oregon", "country": "USA", "other": 123], ["street": "", "region": "Oregon", "country": "USA"], ["s ... ]` must be valid',
+            '__root' => 'Each item in `[["region": "Oregon", "country": "USA", "other": 123], ["street": "", "region": "Oregon", "country": "USA"], ["s ... ]` must be valid',
             0 => [
-                '__root__' => 'These rules must pass for `["region": "Oregon", "country": "USA", "other": 123]`',
+                '__root' => 'These rules must pass for `["region": "Oregon", "country": "USA", "other": 123]`',
                 'street' => 'street must be present',
                 'other' => [
-                    '__root__' => 'These rules must pass for other',
+                    '__root' => 'These rules must pass for other',
                     'nullOrStringType' => 'other must be a string or must be null',
                 ],
             ],
             1 => [
-                '__root__' => 'These rules must pass for `["street": "", "region": "Oregon", "country": "USA"]`',
+                '__root' => 'These rules must pass for `["street": "", "region": "Oregon", "country": "USA"]`',
                 'street' => [
-                    '__root__' => 'These rules must pass for street',
+                    '__root' => 'These rules must pass for street',
                     'notEmpty' => 'street must not be empty',
                 ],
             ],
             2 => [
-                '__root__' => 'These rules must pass for `["street": 123, "region": "Oregon", "country": "USA"]`',
+                '__root' => 'These rules must pass for `["street": 123, "region": "Oregon", "country": "USA"]`',
                 'street' => [
-                    '__root__' => 'These rules must pass for street',
+                    '__root' => 'These rules must pass for street',
                     'stringType' => 'street must be a string',
                 ],
             ],
diff --git a/tests/feature/Issues/Issue1348Test.php b/tests/feature/Issues/Issue1348Test.php
index 4f9797c0f..08596c167 100644
--- a/tests/feature/Issues/Issue1348Test.php
+++ b/tests/feature/Issues/Issue1348Test.php
@@ -47,39 +47,39 @@
           - model must be in `["F150", "Bronco"]`
     FULL_MESSAGE,
     [
-        '__root__' => 'These rules must pass for `[["manufacturer": "Honda", "model": "Accord"], ["manufacturer": "Toyota", "model": "Rav4"], ["manufacturer": "Fo ... ]`',
+        '__root' => 'These rules must pass for `[["manufacturer": "Honda", "model": "Accord"], ["manufacturer": "Toyota", "model": "Rav4"], ["manufacturer": "Fo ... ]`',
         'each' => [
-            '__root__' => 'Each item in `[["manufacturer": "Honda", "model": "Accord"], ["manufacturer": "Toyota", "model": "Rav4"], ["manufacturer": "Fo ... ]` must be valid',
+            '__root' => 'Each item in `[["manufacturer": "Honda", "model": "Accord"], ["manufacturer": "Toyota", "model": "Rav4"], ["manufacturer": "Fo ... ]` must be valid',
             2 => [
-                '__root__' => 'Only one of these rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
+                '__root' => 'Only one of these rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
                 'allOf.1' => [
-                    '__root__' => 'All the required rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
+                    '__root' => 'All the required rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
                     'manufacturer' => 'manufacturer must be equal to "Honda"',
                     'model' => 'model must be in `["Accord", "Fit"]`',
                 ],
                 'allOf.2' => [
-                    '__root__' => 'All the required rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
+                    '__root' => 'All the required rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
                     'manufacturer' => 'manufacturer must be equal to "Toyota"',
                     'model' => 'model must be in `["Rav4", "Camry"]`',
                 ],
                 'allOf.3' => [
-                    '__root__' => 'These rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
+                    '__root' => 'These rules must pass for `["manufacturer": "Ford", "model": "not real"]`',
                     'model' => 'model must be in `["F150", "Bronco"]`',
                 ],
             ],
             3 => [
-                '__root__' => 'Only one of these rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
+                '__root' => 'Only one of these rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
                 'allOf.1' => [
-                    '__root__' => 'These rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
+                    '__root' => 'These rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
                     'model' => 'model must be in `["Accord", "Fit"]`',
                 ],
                 'allOf.2' => [
-                    '__root__' => 'All the required rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
+                    '__root' => 'All the required rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
                     'manufacturer' => 'manufacturer must be equal to "Toyota"',
                     'model' => 'model must be in `["Rav4", "Camry"]`',
                 ],
                 'allOf.3' => [
-                    '__root__' => 'All the required rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
+                    '__root' => 'All the required rules must pass for `["manufacturer": "Honda", "model": "not valid"]`',
                     'manufacturer' => 'manufacturer must be equal to "Ford"',
                     'model' => 'model must be in `["F150", "Bronco"]`',
                 ],
diff --git a/tests/feature/Issues/Issue1376Test.php b/tests/feature/Issues/Issue1376Test.php
index d9bda8334..3e26584eb 100644
--- a/tests/feature/Issues/Issue1376Test.php
+++ b/tests/feature/Issues/Issue1376Test.php
@@ -25,11 +25,11 @@
       - user must be present
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for `stdClass { +$author="foo" }`',
+        '__root' => 'All the required rules must pass for `stdClass { +$author="foo" }`',
         'title' => 'title must be present',
         'description' => 'description must be present',
         'author' => [
-            '__root__' => 'All the required rules must pass for author',
+            '__root' => 'All the required rules must pass for author',
             'intType' => 'author must be an integer',
             'lengthBetween' => 'The length of author must be between 1 and 2',
         ],
diff --git a/tests/feature/Issues/Issue1427Test.php b/tests/feature/Issues/Issue1427Test.php
index 239422ce7..82a0a1863 100644
--- a/tests/feature/Issues/Issue1427Test.php
+++ b/tests/feature/Issues/Issue1427Test.php
@@ -42,26 +42,26 @@
         - permissions must be iterable
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `[16: ["groups": [1, "A", 3, 4, 5], "permissions": ["perm1": true, "perm2": false, "perm3": "boom!"]], 18: false, ... ]` must be valid',
+        '__root' => 'Each item in `[16: ["groups": [1, "A", 3, 4, 5], "permissions": ["perm1": true, "perm2": false, "perm3": "boom!"]], 18: false, ... ]` must be valid',
         16 => [
-            '__root__' => 'These rules must pass for `["groups": [1, "A", 3, 4, 5], "permissions": ["perm1": true, "perm2": false, "perm3": "boom!"]]`',
+            '__root' => 'These rules must pass for `["groups": [1, "A", 3, 4, 5], "permissions": ["perm1": true, "perm2": false, "perm3": "boom!"]]`',
             'groups' => [
-                '__root__' => 'Each item in groups must be valid',
+                '__root' => 'Each item in groups must be valid',
                 1 => 'groups must be an integer value',
             ],
             'permissions' => [
-                '__root__' => 'Each item in permissions must be valid',
+                '__root' => 'Each item in permissions must be valid',
                 'perm3' => 'permissions must be a boolean value',
             ],
         ],
         18 => [
-            '__root__' => 'All the required rules must pass for `false`',
+            '__root' => 'All the required rules must pass for `false`',
             'arrayVal' => '`false` must be an array value',
             'groups' => 'groups must be present',
             'permissions' => 'permissions must be present',
         ],
         24 => [
-            '__root__' => 'These rules must pass for `["permissions": false]`',
+            '__root' => 'These rules must pass for `["permissions": false]`',
             'groups' => 'groups must be present',
             'permissions' => 'permissions must be iterable',
         ],
diff --git a/tests/feature/Issues/Issue1469Test.php b/tests/feature/Issues/Issue1469Test.php
index b4b9e00b2..3c204121e 100644
--- a/tests/feature/Issues/Issue1469Test.php
+++ b/tests/feature/Issues/Issue1469Test.php
@@ -39,20 +39,20 @@ function (): void {
         - product_title2 must not be present
     FULL_MESSAGE,
     [
-        '__root__' => 'These rules must pass for `["order_items": [["product_title": test(?string $description = null, ?Closure $closure = null): Pest\Support\Hig ... ]`',
+        '__root' => 'These rules must pass for `["order_items": [["product_title": test(?string $description = null, ?Closure $closure = null): Pest\Support\Hig ... ]`',
         'keySet' => [
-            '__root__' => '`["order_items": [["product_title": test(?string $description = null, ?Closure $closure = null): Pest\Support\Hig ... ]` validation failed',
+            '__root' => '`["order_items": [["product_title": test(?string $description = null, ?Closure $closure = null): Pest\Support\Hig ... ]` validation failed',
             'each' => [
-                '__root__' => 'Each item in order_items must be valid',
+                '__root' => 'Each item in order_items must be valid',
                 0 => [
-                    '__root__' => 'order_items validation failed',
+                    '__root' => 'order_items validation failed',
                     'quantity' => [
-                        '__root__' => 'These rules must pass for quantity',
+                        '__root' => 'These rules must pass for quantity',
                         'intVal' => 'quantity must be an integer value',
                     ],
                 ],
                 1 => [
-                    '__root__' => 'order_items contains both missing and extra keys',
+                    '__root' => 'order_items contains both missing and extra keys',
                     'product_title' => 'product_title must be present',
                     'quantity' => 'quantity must be present',
                     'product_title2' => 'product_title2 must not be present',
diff --git a/tests/feature/Issues/Issue179Test.php b/tests/feature/Issues/Issue179Test.php
index e4d3fa4cc..892eb6d55 100644
--- a/tests/feature/Issues/Issue179Test.php
+++ b/tests/feature/Issues/Issue179Test.php
@@ -30,7 +30,7 @@ function (): void {
       - user must be present
     FULL_MESSAGE,
     [
-        '__root__' => 'These rules must pass for Settings',
+        '__root' => 'These rules must pass for Settings',
         'host' => 'host must be a string',
         'user' => 'user must be present',
     ]
diff --git a/tests/feature/Issues/Issue425Test.php b/tests/feature/Issues/Issue425Test.php
index a061afa92..943f1e35a 100644
--- a/tests/feature/Issues/Issue425Test.php
+++ b/tests/feature/Issues/Issue425Test.php
@@ -17,7 +17,7 @@ function (): void {
     'reference must be present',
     '- reference must be present',
     [
-        '__root__' => 'These rules must pass for `["age": 1]`',
+        '__root' => 'These rules must pass for `["age": 1]`',
         'reference' => 'reference must be present',
     ]
 ));
diff --git a/tests/feature/Issues/Issue446Test.php b/tests/feature/Issues/Issue446Test.php
index 64411d6ea..aa5158744 100644
--- a/tests/feature/Issues/Issue446Test.php
+++ b/tests/feature/Issues/Issue446Test.php
@@ -20,7 +20,7 @@
     'The length of name must be between 2 and 32',
     '- The length of name must be between 2 and 32',
     [
-        '__root__' => 'These rules must pass for `["name": "w", "email": "hello@hello.com"]`',
+        '__root' => 'These rules must pass for `["name": "w", "email": "hello@hello.com"]`',
         'name' => 'The length of name must be between 2 and 32',
     ]
 ));
diff --git a/tests/feature/Issues/Issue796Test.php b/tests/feature/Issues/Issue796Test.php
index c531577a4..fe4ee80bb 100644
--- a/tests/feature/Issues/Issue796Test.php
+++ b/tests/feature/Issues/Issue796Test.php
@@ -49,13 +49,13 @@
         - user must be a string
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for the given data',
+        '__root' => 'All the required rules must pass for the given data',
         'mysql' => [
-            '__root__' => 'These rules must pass for mysql',
+            '__root' => 'These rules must pass for mysql',
             'host' => 'host must be a string',
         ],
         'postgresql' => [
-            '__root__' => 'These rules must pass for postgresql',
+            '__root' => 'These rules must pass for postgresql',
             'user' => 'user must be a string',
         ],
     ]
diff --git a/tests/feature/Issues/Issue799Test.php b/tests/feature/Issues/Issue799Test.php
index 5e114c596..c5af166e8 100644
--- a/tests/feature/Issues/Issue799Test.php
+++ b/tests/feature/Issues/Issue799Test.php
@@ -25,7 +25,7 @@
       - scheme must be present
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for 1',
+        '__root' => 'All the required rules must pass for 1',
         'arrayVal' => '1 must be an array value',
         'scheme' => 'scheme must be present',
     ]
@@ -43,7 +43,7 @@ function ($url) {
     'scheme must start with "https"',
     '- scheme must start with "https"',
     [
-        '__root__' => 'These rules must pass for `["scheme": "http", "host": "www.google.com", "path": "/search", "query": "q=respect.github.com"]`',
+        '__root' => 'These rules must pass for `["scheme": "http", "host": "www.google.com", "path": "/search", "query": "q=respect.github.com"]`',
         'scheme' => 'scheme must start with "https"',
     ]
 ));
diff --git a/tests/feature/Readme/CustomMessagesTest.php b/tests/feature/Readme/CustomMessagesTest.php
index 98b1d72d4..d3ce86d15 100644
--- a/tests/feature/Readme/CustomMessagesTest.php
+++ b/tests/feature/Readme/CustomMessagesTest.php
@@ -17,7 +17,7 @@
             'length' => '{{name}} must not have more than 15 chars',
         ]),
     [
-        '__root__' => 'All the required rules must pass for "really messed up screen#name"',
+        '__root' => 'All the required rules must pass for "really messed up screen#name"',
         'alnum' => '"really messed up screen#name" must contain only letters and digits',
         'noWhitespace' => '"really messed up screen#name" cannot contain spaces',
         'lengthBetween' => 'The length of "really messed up screen#name" must be between 1 and 15',
diff --git a/tests/feature/Readme/GettingMessagesAsAnArrayTest.php b/tests/feature/Readme/GettingMessagesAsAnArrayTest.php
index 58d1ce9d9..879a6aafb 100644
--- a/tests/feature/Readme/GettingMessagesAsAnArrayTest.php
+++ b/tests/feature/Readme/GettingMessagesAsAnArrayTest.php
@@ -10,7 +10,7 @@
 test('Scenario #1', expectMessages(
     fn() => v::alnum()->noWhitespace()->lengthBetween(1, 15)->assert('really messed up screen#name'),
     [
-        '__root__' => 'All the required rules must pass for "really messed up screen#name"',
+        '__root' => 'All the required rules must pass for "really messed up screen#name"',
         'alnum' => '"really messed up screen#name" must contain only letters (a-z) and digits (0-9)',
         'noWhitespace' => '"really messed up screen#name" must not contain whitespaces',
         'lengthBetween' => 'The length of "really messed up screen#name" must be between 1 and 15',
diff --git a/tests/feature/Rules/AllOfTest.php b/tests/feature/Rules/AllOfTest.php
index d2069c1b5..0f1c8baaa 100644
--- a/tests/feature/Rules/AllOfTest.php
+++ b/tests/feature/Rules/AllOfTest.php
@@ -16,7 +16,7 @@
       - "2" must be a negative number
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for "2"',
+        '__root' => 'All the required rules must pass for "2"',
         'intType' => '"2" must be an integer',
         'negative' => '"2" must be a negative number',
     ]
@@ -31,7 +31,7 @@
       - 3 must not be a positive number
     FULL_MESSAGE,
     [
-        '__root__' => 'These rules must not pass for 3',
+        '__root' => 'These rules must not pass for 3',
         'intType' => '3 must not be an integer',
         'positive' => '3 must not be a positive number',
     ]
@@ -42,7 +42,7 @@
     '4 must not be an integer',
     '- 4 must not be an integer',
     [
-        '__root__' => 'These rules must pass for 4',
+        '__root' => 'These rules must pass for 4',
         'notIntType' => '4 must not be an integer',
     ]
 ));
@@ -56,7 +56,7 @@
 
 test('With multiple templates', expectAll(
     fn() => v::allOf(v::stringType(), v::uppercase())->assert(5, [
-        '__root__' => 'Two things are wrong',
+        '__root' => 'Two things are wrong',
         'stringType' => 'Template for "stringType"',
         'uppercase' => 'Template for "uppercase"',
     ]),
@@ -67,7 +67,7 @@
       - Template for "uppercase"
     FULL_MESSAGE,
     [
-        '__root__' => 'Two things are wrong',
+        '__root' => 'Two things are wrong',
         'stringType' => 'Template for "stringType"',
         'uppercase' => 'Template for "uppercase"',
     ]
diff --git a/tests/feature/Rules/AttributesTest.php b/tests/feature/Rules/AttributesTest.php
index da23a4cc3..955b77a4b 100644
--- a/tests/feature/Rules/AttributesTest.php
+++ b/tests/feature/Rules/AttributesTest.php
@@ -14,7 +14,7 @@
     'name must not be empty',
     '- name must not be empty',
     [
-        '__root__' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="" +$email="john.doe@gmail.com" +$birthdate="2024-06-23" + ... }`',
+        '__root' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="" +$email="john.doe@gmail.com" +$birthdate="2024-06-23" + ... }`',
         'name' => 'name must not be empty',
     ]
 ));
@@ -24,7 +24,7 @@
     'phone must be a valid telephone number or must be null',
     '- phone must be a valid telephone number or must be null',
     [
-        '__root__' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$email="john.doe@gmail.com" +$birthdate="2024- ... }`',
+        '__root' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$email="john.doe@gmail.com" +$birthdate="2024- ... }`',
         'phone' => 'phone must be a valid telephone number or must be null',
     ]
 ));
@@ -41,7 +41,7 @@
     'phone must be a valid telephone number or must be null',
     '- phone must be a valid telephone number or must be null',
     [
-        '__root__' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$email="john.doe@gmail.com" +$birthdate="2024- ... }`',
+        '__root' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$email="john.doe@gmail.com" +$birthdate="2024- ... }`',
         'phone' => 'phone must be a valid telephone number or must be null',
     ]
 ));
@@ -59,11 +59,11 @@
       - phone must be a valid telephone number or must be null
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for `Respect\\Validation\\Test\\Stubs\\WithAttributes { +$name="" +$email="not an email" +$birthdate="not a date" +$phone ... }`',
+        '__root' => 'All the required rules must pass for `Respect\\Validation\\Test\\Stubs\\WithAttributes { +$name="" +$email="not an email" +$birthdate="not a date" +$phone ... }`',
         'name' => 'name must not be empty',
         'email' => 'email must be a valid email address',
         'birthdate' => [
-            '__root__' => 'All the required rules must pass for birthdate',
+            '__root' => 'All the required rules must pass for birthdate',
             'date' => 'birthdate must be a valid date in the format "2005-12-30"',
             'dateTimeDiffLessThanOrEqual' => 'For comparison with now, birthdate must be a valid datetime',
         ],
@@ -76,9 +76,9 @@
     'birthdate must be a valid date in the format "2005-12-30"',
     '- birthdate must be a valid date in the format "2005-12-30"',
     [
-        '__root__' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$email="john.doe@gmail.com" +$birthdate="22 ye ... }`',
+        '__root' => 'These rules must pass for `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$email="john.doe@gmail.com" +$birthdate="22 ye ... }`',
         'birthdate' => [
-            '__root__' => 'These rules must pass for birthdate',
+            '__root' => 'These rules must pass for birthdate',
             'date' => 'birthdate must be a valid date in the format "2005-12-30"',
         ],
     ]
diff --git a/tests/feature/Rules/DateTimeDiffTest.php b/tests/feature/Rules/DateTimeDiffTest.php
index d59fe358b..e7b1195de 100644
--- a/tests/feature/Rules/DateTimeDiffTest.php
+++ b/tests/feature/Rules/DateTimeDiffTest.php
@@ -121,7 +121,7 @@
       - The number of years between now and "1 year ago" must be between 2 and 5
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for "1 year ago"',
+        '__root' => 'All the required rules must pass for "1 year ago"',
         'dateTimeDiffPrimeNumber' => 'The number of years between now and "1 year ago" must be a prime number',
         'dateTimeDiffBetween' => 'The number of years between now and "1 year ago" must be between 2 and 5',
     ]
@@ -141,7 +141,7 @@
       - The number of years between now and "1 year ago" must be between 2 and 5
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for "1 year ago"',
+        '__root' => 'All the required rules must pass for "1 year ago"',
         'dateTimeDiffPrimeNumber' => 'The number of years between now and "1 year ago" must be a prime number',
         'dateTimeDiffBetween' => 'The number of years between now and "1 year ago" must be between 2 and 5',
     ]
diff --git a/tests/feature/Rules/EachTest.php b/tests/feature/Rules/EachTest.php
index ee1f78249..e04008d57 100644
--- a/tests/feature/Rules/EachTest.php
+++ b/tests/feature/Rules/EachTest.php
@@ -31,7 +31,7 @@
       - "c" must be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `["a", "b", "c"]` must be valid',
+        '__root' => 'Each item in `["a", "b", "c"]` must be valid',
         0 => '"a" must be an integer',
         1 => '"b" must be an integer',
         2 => '"c" must be an integer',
@@ -48,7 +48,7 @@
       - 3 must not be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `[1, 2, 3]` must be invalid',
+        '__root' => 'Each item in `[1, 2, 3]` must be invalid',
         0 => '1 must not be an integer',
         1 => '2 must not be an integer',
         2 => '3 must not be an integer',
@@ -79,7 +79,7 @@
       - Wrapped must be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in Wrapped must be valid',
+        '__root' => 'Each item in Wrapped must be valid',
         0 => 'Wrapped must be an integer',
         1 => 'Wrapped must be an integer',
         2 => 'Wrapped must be an integer',
@@ -96,7 +96,7 @@
       - Wrapped must not be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in Wrapped must be invalid',
+        '__root' => 'Each item in Wrapped must be invalid',
         0 => 'Wrapped must not be an integer',
         1 => 'Wrapped must not be an integer',
         2 => 'Wrapped must not be an integer',
@@ -113,7 +113,7 @@
       - Wrapper must be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in Wrapper must be valid',
+        '__root' => 'Each item in Wrapper must be valid',
         0 => 'Wrapper must be an integer',
         1 => 'Wrapper must be an integer',
         2 => 'Wrapper must be an integer',
@@ -130,7 +130,7 @@
       - Wrapper must not be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in Wrapper must be invalid',
+        '__root' => 'Each item in Wrapper must be invalid',
         0 => 'Wrapper must not be an integer',
         1 => 'Wrapper must not be an integer',
         2 => 'Wrapper must not be an integer',
@@ -147,7 +147,7 @@
       - Not must not be an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in Not must be invalid',
+        '__root' => 'Each item in Not must be invalid',
         0 => 'Not must not be an integer',
         1 => 'Not must not be an integer',
         2 => 'Not must not be an integer',
@@ -191,7 +191,7 @@
     fn() => v::each(v::intType())
         ->setTemplates([
             'each' => [
-                '__root__' => 'Here a sequence of items that did not pass the validation',
+                '__root' => 'Here a sequence of items that did not pass the validation',
                 0 => 'First item should have been an integer',
                 1 => 'Second item should have been an integer',
                 2 => 'Third item should have been an integer',
@@ -206,7 +206,7 @@
       - Third item should have been an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Here a sequence of items that did not pass the validation',
+        '__root' => 'Here a sequence of items that did not pass the validation',
         0 => 'First item should have been an integer',
         1 => 'Second item should have been an integer',
         2 => 'Third item should have been an integer',
@@ -218,7 +218,7 @@
         ->setName('Wrapper')
         ->setTemplates([
             'Wrapped' => [
-                '__root__' => 'Here a sequence of items that did not pass the validation',
+                '__root' => 'Here a sequence of items that did not pass the validation',
                 0 => 'First item should have been an integer',
                 1 => 'Second item should have been an integer',
                 2 => 'Third item should have been an integer',
@@ -233,7 +233,7 @@
       - Third item should have been an integer
     FULL_MESSAGE,
     [
-        '__root__' => 'Here a sequence of items that did not pass the validation',
+        '__root' => 'Here a sequence of items that did not pass the validation',
         0 => 'First item should have been an integer',
         1 => 'Second item should have been an integer',
         2 => 'Third item should have been an integer',
@@ -253,14 +253,14 @@
         - 4 must be an odd number
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `[2, 4]` must be valid',
+        '__root' => 'Each item in `[2, 4]` must be valid',
         0 => [
-            '__root__' => 'All the required rules must pass for 2',
+            '__root' => 'All the required rules must pass for 2',
             'between' => '2 must be between 5 and 7',
             'odd' => '2 must be an odd number',
         ],
         1 => [
-            '__root__' => 'All the required rules must pass for 4',
+            '__root' => 'All the required rules must pass for 4',
             'between' => '4 must be between 5 and 7',
             'odd' => '4 must be an odd number',
         ],
@@ -281,20 +281,20 @@
         - my_int must be present
     FULL_MESSAGE,
     [
-        '__root__' => 'Each item in `[["not_int": "wrong"], ["my_int": 2], "not an array"]` must be valid',
+        '__root' => 'Each item in `[["not_int": "wrong"], ["my_int": 2], "not an array"]` must be valid',
         0 => [
-            '__root__' => 'These rules must pass for `["not_int": "wrong"]`',
+            '__root' => 'These rules must pass for `["not_int": "wrong"]`',
             'my_int' => 'my_int must be present',
         ],
         1 => [
-            '__root__' => 'These rules must pass for `["my_int": 2]`',
+            '__root' => 'These rules must pass for `["my_int": 2]`',
             'my_int' => [
-                '__root__' => 'These rules must pass for my_int',
+                '__root' => 'These rules must pass for my_int',
                 'odd' => 'my_int must be an odd number',
             ],
         ],
         2 => [
-            '__root__' => 'All the required rules must pass for "not an array"',
+            '__root' => 'All the required rules must pass for "not an array"',
             'arrayType' => '"not an array" must be an array',
             'my_int' => 'my_int must be present',
         ],
diff --git a/tests/feature/Rules/KeySetTest.php b/tests/feature/Rules/KeySetTest.php
index 85b7a8f17..90f16c813 100644
--- a/tests/feature/Rules/KeySetTest.php
+++ b/tests/feature/Rules/KeySetTest.php
@@ -12,7 +12,7 @@
     'foo must be an integer',
     '- foo must be an integer',
     [
-        '__root__' => '`["foo": "string"]` validation failed',
+        '__root' => '`["foo": "string"]` validation failed',
         'foo' => 'foo must be an integer',
     ]
 ));
@@ -22,7 +22,7 @@
     'foo must be present',
     '- foo must be present',
     [
-        '__root__' => '`[]` contains missing keys',
+        '__root' => '`[]` contains missing keys',
         'foo' => 'foo must be present',
     ]
 ));
@@ -32,7 +32,7 @@
     'bar must not be present',
     '- bar must not be present',
     [
-        '__root__' => '`["foo": 42, "bar": "string"]` contains extra keys',
+        '__root' => '`["foo": 42, "bar": "string"]` contains extra keys',
         'bar' => 'bar must not be present',
     ]
 ));
@@ -46,7 +46,7 @@
       - bar must not be present
     FULL_MESSAGE,
     [
-        '__root__' => '`["bar": true]` contains both missing and extra keys',
+        '__root' => '`["bar": true]` contains both missing and extra keys',
         'foo' => 'foo must be present',
         'bar' => 'bar must not be present',
     ]
@@ -61,7 +61,7 @@
       - baz must not be present
     FULL_MESSAGE,
     [
-        '__root__' => '`["foo": 42, "bar": "string", "baz": true]` contains extra keys',
+        '__root' => '`["foo": 42, "bar": "string", "baz": true]` contains extra keys',
         'bar' => 'bar must not be present',
         'baz' => 'baz must not be present',
     ]
@@ -99,7 +99,7 @@
       - plugh must not be present
     FULL_MESSAGE,
     [
-        '__root__' => '`["foo": 42, "bar": "string", "baz": true, "qux": false, "quux": 42, ...]` contains extra keys',
+        '__root' => '`["foo": 42, "bar": "string", "baz": true, "qux": false, "quux": 42, ...]` contains extra keys',
         'bar' => 'bar must not be present',
         'baz' => 'baz must not be present',
         'qux' => 'qux must not be present',
@@ -118,7 +118,7 @@
     'bar must be present',
     '- bar must be present',
     [
-        '__root__' => '`["foo": 42]` contains missing keys',
+        '__root' => '`["foo": 42]` contains missing keys',
         'bar' => 'bar must be present',
     ]
 ));
@@ -132,7 +132,7 @@
       - bar must be present
     FULL_MESSAGE,
     [
-        '__root__' => '`[]` contains missing keys',
+        '__root' => '`[]` contains missing keys',
         'foo' => 'foo must be present',
         'bar' => 'bar must be present',
     ]
@@ -146,7 +146,7 @@
     'baz must not be present',
     '- baz must not be present',
     [
-        '__root__' => '`["foo": 42, "bar": "string", "baz": true]` contains extra keys',
+        '__root' => '`["foo": 42, "bar": "string", "baz": true]` contains extra keys',
         'baz' => 'baz must not be present',
     ]
 ));
@@ -163,7 +163,7 @@
       - baz must not be present
     FULL_MESSAGE,
     [
-        '__root__' => '`["bar": "string", "baz": true]` contains both missing and extra keys',
+        '__root' => '`["bar": "string", "baz": true]` contains both missing and extra keys',
         'foo' => 'foo must be present',
         'baz' => 'baz must not be present',
     ]
@@ -182,7 +182,7 @@
       - baz must not be present
     FULL_MESSAGE,
     [
-        '__root__' => '`["foo": 42, "bar": "string", "baz": true, "qux": false]` contains extra keys',
+        '__root' => '`["foo": 42, "bar": "string", "baz": true, "qux": false]` contains extra keys',
         'qux' => 'qux must be an integer',
         'baz' => 'baz must not be present',
     ]
@@ -202,7 +202,7 @@
       - baz must be an integer
     FULL_MESSAGE,
     [
-        '__root__' => '`["foo": 42, "bar": "string", "baz": true]` validation failed',
+        '__root' => '`["foo": 42, "bar": "string", "baz": true]` validation failed',
         'bar' => 'bar must be an integer',
         'baz' => 'baz must be an integer',
     ]
@@ -223,7 +223,7 @@
       - baz must be present
     FULL_MESSAGE,
     [
-        '__root__' => '`["foo": 42, "bar": "string"]` contains missing keys',
+        '__root' => '`["foo": 42, "bar": "string"]` contains missing keys',
         'bar' => 'bar must be an integer',
         'baz' => 'baz must be present',
     ]
diff --git a/tests/feature/Rules/LengthTest.php b/tests/feature/Rules/LengthTest.php
index 427535e78..8dd190d3c 100644
--- a/tests/feature/Rules/LengthTest.php
+++ b/tests/feature/Rules/LengthTest.php
@@ -51,7 +51,7 @@
       - The length of `[]` must be an odd number
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for `[]`',
+        '__root' => 'All the required rules must pass for `[]`',
         'lengthBetween' => 'The length of `[]` must be between 5 and 7',
         'lengthOdd' => 'The length of `[]` must be an odd number',
     ]
diff --git a/tests/feature/Rules/MaxTest.php b/tests/feature/Rules/MaxTest.php
index 1906b8064..9e977618f 100644
--- a/tests/feature/Rules/MaxTest.php
+++ b/tests/feature/Rules/MaxTest.php
@@ -79,7 +79,7 @@
       - The maximum of `[1, 2, 3, 4]` must be an odd number
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for `[1, 2, 3, 4]`',
+        '__root' => 'All the required rules must pass for `[1, 2, 3, 4]`',
         'maxBetween' => 'The maximum of `[1, 2, 3, 4]` must be between 5 and 7',
         'maxOdd' => 'The maximum of `[1, 2, 3, 4]` must be an odd number',
     ]
diff --git a/tests/feature/Rules/MinTest.php b/tests/feature/Rules/MinTest.php
index 9725b787a..4148e6626 100644
--- a/tests/feature/Rules/MinTest.php
+++ b/tests/feature/Rules/MinTest.php
@@ -44,7 +44,7 @@
       - The minimum of `[2, 3, 4]` must be an odd number
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for `[2, 3, 4]`',
+        '__root' => 'All the required rules must pass for `[2, 3, 4]`',
         'minBetween' => 'The minimum of `[2, 3, 4]` must be between 5 and 7',
         'minOdd' => 'The minimum of `[2, 3, 4]` must be an odd number',
     ]
diff --git a/tests/feature/Rules/NullOrTest.php b/tests/feature/Rules/NullOrTest.php
index 73a199a08..1868f9e26 100644
--- a/tests/feature/Rules/NullOrTest.php
+++ b/tests/feature/Rules/NullOrTest.php
@@ -86,7 +86,7 @@
       - 1234 must be a string or must be null
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for 1234',
+        '__root' => 'All the required rules must pass for 1234',
         'nullOrAlpha' => '1234 must contain only letters (a-z) or must be null',
         'nullOrStringType' => '1234 must be a string or must be null',
     ]
@@ -104,7 +104,7 @@
       - Should be nul or string type
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for 1234',
+        '__root' => 'All the required rules must pass for 1234',
         'nullOrAlpha' => 'Should be nul or alpha',
         'nullOrStringType' => 'Should be nul or string type',
     ]
diff --git a/tests/feature/Rules/PropertyTest.php b/tests/feature/Rules/PropertyTest.php
index 8b2cd5f2b..0bf49af7b 100644
--- a/tests/feature/Rules/PropertyTest.php
+++ b/tests/feature/Rules/PropertyTest.php
@@ -31,7 +31,7 @@
     FULL_MESSAGE,
     [
         'foo' => [
-            '__root__' => 'All the required rules must pass for foo',
+            '__root' => 'All the required rules must pass for foo',
             'intType' => 'foo must be an integer',
             'positive' => 'foo must be a positive number',
         ],
diff --git a/tests/feature/Rules/SizeTest.php b/tests/feature/Rules/SizeTest.php
index 568c05dc5..94527abcf 100644
--- a/tests/feature/Rules/SizeTest.php
+++ b/tests/feature/Rules/SizeTest.php
@@ -66,7 +66,7 @@
       - The size in kilobytes of "vfs://root/2kb.txt" must be an odd number
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for "vfs://root/2kb.txt"',
+        '__root' => 'All the required rules must pass for "vfs://root/2kb.txt"',
         'sizeBetween' => 'The size in kilobytes of "vfs://root/2kb.txt" must be between 5 and 7',
         'sizeOdd' => 'The size in kilobytes of "vfs://root/2kb.txt" must be an odd number',
     ]
diff --git a/tests/feature/Rules/UndefOrTest.php b/tests/feature/Rules/UndefOrTest.php
index 890aaeab0..97087de40 100644
--- a/tests/feature/Rules/UndefOrTest.php
+++ b/tests/feature/Rules/UndefOrTest.php
@@ -86,7 +86,7 @@
       - 1234 must be a string or must be undefined
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for 1234',
+        '__root' => 'All the required rules must pass for 1234',
         'undefOrAlpha' => '1234 must contain only letters (a-z) or must be undefined',
         'undefOrStringType' => '1234 must be a string or must be undefined',
     ]
@@ -104,7 +104,7 @@
       - Should be nul or string type
     FULL_MESSAGE,
     [
-        '__root__' => 'All the required rules must pass for 1234',
+        '__root' => 'All the required rules must pass for 1234',
         'undefOrAlpha' => 'Should be nul or alpha',
         'undefOrStringType' => 'Should be nul or string type',
     ]
diff --git a/tests/unit/Message/StandardFormatter/ArrayProvider.php b/tests/unit/Message/StandardFormatter/ArrayProvider.php
index 221f40c25..2cc5402d5 100644
--- a/tests/unit/Message/StandardFormatter/ArrayProvider.php
+++ b/tests/unit/Message/StandardFormatter/ArrayProvider.php
@@ -32,7 +32,7 @@ public static function provideForArray(): array
             'with single-level children, without templates' => [
                 self::singleLevelChildrenMessage(),
                 [
-                    '__root__' => '__parent_original__',
+                    '__root' => '__parent_original__',
                     '1st' => '__1st_original__',
                     '2nd' => '__2nd_original__',
                     '3rd' => '__3rd_original__',
@@ -41,13 +41,13 @@ public static function provideForArray(): array
             'with single-level children, with templates' => [
                 self::singleLevelChildrenMessage(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => '2nd custom',
                     '3rd' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => '2nd custom',
                     '3rd' => '3rd custom',
@@ -56,7 +56,7 @@ public static function provideForArray(): array
             'with single-level children, with partial templates' => [
                 self::singleLevelChildrenMessage(),
                 [
-                    '__root__' => '__parent_original__',
+                    '__root' => '__parent_original__',
                     '1st' => '1st custom',
                     '2nd' => '__2nd_original__',
                     '3rd' => '3rd custom',
@@ -74,10 +74,10 @@ public static function provideForArray(): array
             'with single-nested child, without templates' => [
                 self::multiLevelChildrenWithSingleNestedChildMessage(),
                 [
-                    '__root__' => '__parent_original__',
+                    '__root' => '__parent_original__',
                     '1st' => '__1st_original__',
                     '2nd' => [
-                        '__root__' => '__2nd_original__',
+                        '__root' => '__2nd_original__',
                         '2nd_1st' => '__2nd_1st_original__',
                     ],
                     '3rd' => '__3rd_original__',
@@ -86,16 +86,16 @@ public static function provideForArray(): array
             'with single-nested child, with templates' => [
                 self::multiLevelChildrenWithSingleNestedChildMessage(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
-                        '__root__' => '__2nd_original__',
+                        '__root' => '__2nd_original__',
                         '2nd_1st' => '2nd > 1st custom',
                     ],
                     '3rd' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
                         '2nd_1st' => '2nd > 1st custom',
@@ -106,16 +106,16 @@ public static function provideForArray(): array
             'with single-nested child, with partial templates' => [
                 self::multiLevelChildrenWithSingleNestedChildMessage(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
-                        '__root__' => '__2nd_original__',
+                        '__root' => '__2nd_original__',
                         '2nd_1st' => '__2nd_1st_original__',
                     ],
                     '3rd' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
                         '2nd_2nd' => '2nd > 2nd not shown',
@@ -126,13 +126,13 @@ public static function provideForArray(): array
             'with single-nested child, with overwritten templates' => [
                 self::multiLevelChildrenWithSingleNestedChildMessage(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => '2nd custom',
                     '3rd' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => '2nd custom',
                     '3rd' => '3rd custom',
@@ -141,10 +141,10 @@ public static function provideForArray(): array
             'with multi-nested children, without templates' => [
                 self::multiLevelChildrenWithMultiNestedChildrenMessage(),
                 [
-                    '__root__' => '__parent_original__',
+                    '__root' => '__parent_original__',
                     '1st' => '__1st_original__',
                     '2nd' => [
-                        '__root__' => '__2nd_original__',
+                        '__root' => '__2nd_original__',
                         '2nd_1st' => '__2nd_1st_original__',
                         '2nd_2nd' => '__2nd_2nd_original__',
                     ],
@@ -154,20 +154,20 @@ public static function provideForArray(): array
             'with multi-nested children, with templates' => [
                 self::multiLevelChildrenWithMultiNestedChildrenMessage(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
-                        '__root__' => '2nd custom',
+                        '__root' => '2nd custom',
                         '2nd_1st' => '2nd > 1st custom',
                         '2nd_2nd' => '2nd > 2nd custom',
                     ],
                     '3rd' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
-                        '__root__' => '2nd custom',
+                        '__root' => '2nd custom',
                         '2nd_1st' => '2nd > 1st custom',
                         '2nd_2nd' => '2nd > 2nd custom',
                     ],
@@ -177,17 +177,17 @@ public static function provideForArray(): array
             'with multi-nested children, with partial templates' => [
                 self::multiLevelChildrenWithMultiNestedChildrenMessage(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
-                        '__root__' => '__2nd_original__',
+                        '__root' => '__2nd_original__',
                         '2nd_1st' => '__2nd_1st_original__',
                         '2nd_2nd' => '2nd > 2nd custom',
                     ],
                     '3rd' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => [
                         '2nd_2nd' => '2nd > 2nd custom',
@@ -198,7 +198,7 @@ public static function provideForArray(): array
             'with children with the same id, without templates' => [
                 self::singleLevelChildrenWithSameId(),
                 [
-                    '__root__' => '__parent_original__',
+                    '__root' => '__parent_original__',
                     'child.1' => '__1st_original__',
                     'child.2' => '__2nd_original__',
                     'child.3' => '__3rd_original__',
@@ -207,13 +207,13 @@ public static function provideForArray(): array
             'with children with the same id, with templates' => [
                 self::singleLevelChildrenWithSameId(),
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     'child.1' => '1st custom',
                     'child.2' => '2nd custom',
                     'child.3' => '3rd custom',
                 ],
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     'child.1' => '1st custom',
                     'child.2' => '2nd custom',
                     'child.3' => '3rd custom',
@@ -222,7 +222,7 @@ public static function provideForArray(): array
             'with children with the same id, with partial templates' => [
                 self::singleLevelChildrenWithSameId(),
                 [
-                    '__root__' => '__parent_original__',
+                    '__root' => '__parent_original__',
                     'child.1' => '1st custom',
                     'child.2' => '2nd custom',
                     'child.3' => '__3rd_original__',
diff --git a/tests/unit/Message/StandardFormatter/FullProvider.php b/tests/unit/Message/StandardFormatter/FullProvider.php
index f92cfc4f5..108459178 100644
--- a/tests/unit/Message/StandardFormatter/FullProvider.php
+++ b/tests/unit/Message/StandardFormatter/FullProvider.php
@@ -48,7 +48,7 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => '2nd custom',
                         '3rd' => '3rd custom',
@@ -98,10 +98,10 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => [
-                            '__root__' => '2nd custom',
+                            '__root' => '2nd custom',
                             '2nd_1st' => '2nd > 1st custom',
                         ],
                         '3rd' => '3rd custom',
@@ -119,7 +119,7 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => [
                             '2nd_2nd' => '2nd > 2nd not shown',
@@ -138,7 +138,7 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => '2nd custom',
                         '3rd' => '3rd custom',
@@ -168,10 +168,10 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => [
-                            '__root__' => '2nd custom',
+                            '__root' => '2nd custom',
                             '2nd_1st' => '2nd > 1st custom',
                             '2nd_2nd' => '2nd > 2nd custom',
                         ],
@@ -191,7 +191,7 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => [
                             '2nd_2nd' => '2nd > 2nd custom',
@@ -210,7 +210,7 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         '1st' => '1st custom',
                         '2nd' => '2nd custom',
                         '3rd' => '3rd custom',
@@ -236,7 +236,7 @@ public static function provideForFull(): array
                 FULL_MESSAGE,
                 [
                     'parent' => [
-                        '__root__' => 'Parent custom',
+                        '__root' => 'Parent custom',
                         'child.1' => '1st custom',
                         'child.2' => '2nd custom',
                         'child.3' => '3rd custom',
@@ -280,7 +280,7 @@ public static function provideForFull(): array
                     'parent' => [
                         '1st' => '1st custom',
                         '2nd' => [
-                            '__root__' => '2nd custom',
+                            '__root' => '2nd custom',
                             '2nd_1st' => '2nd > 1st custom',
                         ],
                     ],
diff --git a/tests/unit/Message/StandardFormatter/MainProvider.php b/tests/unit/Message/StandardFormatter/MainProvider.php
index 1ed52d442..e0218661d 100644
--- a/tests/unit/Message/StandardFormatter/MainProvider.php
+++ b/tests/unit/Message/StandardFormatter/MainProvider.php
@@ -49,7 +49,7 @@ public static function provideForMain(): array
                     ->build(),
                 'Parent custom',
                 [
-                    '__root__' => 'Parent custom',
+                    '__root' => 'Parent custom',
                     '1st' => '1st custom',
                     '2nd' => '2nd custom',
                 ],
diff --git a/tests/unit/ValidatorTest.php b/tests/unit/ValidatorTest.php
index 3833c2d74..828a79fb6 100644
--- a/tests/unit/ValidatorTest.php
+++ b/tests/unit/ValidatorTest.php
@@ -142,12 +142,12 @@ public function itShouldAssertUsingTheGivingArrayTemplateWithTheRuleNameAsKey():
     #[Test]
     public function itShouldAssertUsingTheGivingArrayTemplateWithRootKey(): void
     {
-        $template = ['__root__' => 'This is my new template'];
+        $template = ['__root' => 'This is my new template'];
 
-        $this->expectExceptionMessage($template['__root__']);
+        $this->expectExceptionMessage($template['__root']);
 
         $validator = Validator::create(Stub::fail(1));
-        $validator->setTemplates(['__root__' => 'This is my pre-defined template']);
+        $validator->setTemplates(['__root' => 'This is my pre-defined template']);
         $validator->assert('whatever', $template);
     }
 
@@ -173,7 +173,7 @@ public static function providerForTemplates(): array
         return [
             'string' => ['This is my new template'],
             'array key named key' => [['stub' => 'This is my new template']],
-            'array key __root__ key' => [['__root__' => 'This is my new template']],
+            'array key __root key' => [['__root' => 'This is my new template']],
         ];
     }
 }