diff --git a/som-interpreter-bc/src/shell.rs b/som-interpreter-bc/src/shell.rs
index 4efd47f6..cfd30226 100644
--- a/som-interpreter-bc/src/shell.rs
+++ b/som-interpreter-bc/src/shell.rs
@@ -6,7 +6,6 @@ use anyhow::Error;
 
 use som_lexer::{Lexer, Token};
 use som_parser::lang;
-use som_parser::Parser;
 
 use som_interpreter_bc::compiler;
 use som_interpreter_bc::frame::FrameKind;
@@ -64,9 +63,9 @@ pub fn interactive(
         }
 
         let start = Instant::now();
-        let class_def = match lang::class_def().parse(tokens.as_slice()) {
-            Some((expr, rest)) if rest.is_empty() => expr,
-            Some(_) | None => {
+        let class_def = match som_parser::apply(lang::class_def(), tokens.as_slice()) {
+            Some(class_def) => class_def,
+            None => {
                 println!("ERROR: could not fully parse the given expression");
                 continue;
             }
diff --git a/som-interpreter-bc/tests/basic_interpreter_tests.rs b/som-interpreter-bc/tests/basic_interpreter_tests.rs
index b384b610..1637e94b 100644
--- a/som-interpreter-bc/tests/basic_interpreter_tests.rs
+++ b/som-interpreter-bc/tests/basic_interpreter_tests.rs
@@ -7,7 +7,6 @@ use som_interpreter_bc::universe::Universe;
 use som_interpreter_bc::value::Value;
 use som_lexer::{Lexer, Token};
 use som_parser::lang;
-use som_parser::Parser;
 
 fn setup_universe() -> Universe {
     let classpath = vec![
@@ -140,12 +139,7 @@ fn basic_interpreter_tests() {
             "could not fully tokenize test expression"
         );
 
-        let (class_def, rest) = lang::class_def().parse(tokens.as_slice()).unwrap();
-        assert!(
-            rest.is_empty(),
-            "could not fully parse test expression: {:?}",
-            rest
-        );
+        let class_def = som_parser::apply(lang::class_def(), tokens.as_slice()).unwrap();
 
         let object_class = universe.object_class();
         let class =
diff --git a/som-parser-symbols/src/lib.rs b/som-parser-symbols/src/lib.rs
index f586c2f3..a4d3aa14 100644
--- a/som-parser-symbols/src/lib.rs
+++ b/som-parser-symbols/src/lib.rs
@@ -13,8 +13,7 @@ use som_parser_core::Parser;
 
 /// Parses the input of an entire file into an AST.
 pub fn parse_file(input: &[Token]) -> Option<ClassDef> {
-    let (class, _) = lang::file().parse(input)?;
-    Some(class)
+    self::apply(lang::file(), input)
 }
 
 /// Applies a parser and returns the output value if the entirety of the input has been parsed successfully.
diff --git a/som-parser-text/src/lib.rs b/som-parser-text/src/lib.rs
index 957a4fb5..eb5659e0 100644
--- a/som-parser-text/src/lib.rs
+++ b/som-parser-text/src/lib.rs
@@ -12,8 +12,7 @@ use som_parser_core::Parser;
 
 /// Parses the input of an entire file into an AST.
 pub fn parse_file(input: &[char]) -> Option<ClassDef> {
-    let (class, _) = lang::file().parse(input)?;
-    Some(class)
+    self::apply(lang::file(), input)
 }
 
 /// Applies a parser and returns the output value if the entirety of the input has been parsed successfully.