diff --git a/docs/en/02_Developer_Guides/05_Extending/01_Extensions.md b/docs/en/02_Developer_Guides/05_Extending/01_Extensions.md
index 08aab63e9..a00a037cf 100644
--- a/docs/en/02_Developer_Guides/05_Extending/01_Extensions.md
+++ b/docs/en/02_Developer_Guides/05_Extending/01_Extensions.md
@@ -112,7 +112,7 @@ we added a `SayHi` method which is unique to our extension.
 
 ## Modifying Existing Methods
 
-If the `Extension` needs to modify an existing method it's a little tricker. It requires that the method you want to
+If the `Extension` needs to modify an existing method it's a little trickier. It requires that the method you want to
 customize has provided an *Extension Hook* in the place where you want to modify the data. An *Extension Hook* is done 
 through the `[api:Object->extend]` method.