diff --git a/Readme.md b/Readme.md
index bab159ce..660c26b7 100644
--- a/Readme.md
+++ b/Readme.md
@@ -40,4 +40,4 @@
 | Entry Name | Type | Description |
 |:----------:|:----:|:-----------:|
 | LimitSwitch | Boolean | True for triggered |
-| ExtentionPercent | Double | Percent extended |
\ No newline at end of file
+| ExtensionPercent | Double | Percent extended |
\ No newline at end of file