diff --git a/railties/guides/source/active_support_overview.textile b/railties/guides/source/active_support_overview.textile
index aeaebe140e52a..8641eca3ebb09 100644
--- a/railties/guides/source/active_support_overview.textile
+++ b/railties/guides/source/active_support_overview.textile
@@ -112,7 +112,7 @@ The return value of +to_param+ should *not* be escaped:
 "Tom & Jerry".to_param # => "Tom & Jerry"
 </ruby>
 
-Several classes in Rails overwrite these method.
+Several classes in Rails overwrite this method.
 
 For example +nil+, +true+, and +false+ return themselves. +Array#to_param+ calls +to_param+ on the elements and joins the result with "/":