fix incorrect class name [ci skip]

1 files changed, 1 insertions, 1 deletions

diff --git a/guides/source/action_controller_overview.md b/guides/source/action_controller_overview.md
index 848c9caa59..a906f64633 100644
--- a/guides/source/action_controller_overview.md
+++ b/guides/source/action_controller_overview.md
@@ -203,7 +203,7 @@ predefined raise/rescue flow to end up as a 400 Bad Request.
 
 ```ruby
 class PeopleController < ActionController::Base
-  # This will raise an ActiveModel::ForbiddenAttributes exception
+  # This will raise an ActiveModel::ForbiddenAttributesError exception
   # because it's using mass assignment without an explicit permit
   # step.
   def create