diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb
index 9025d9e24c..68722b8214 100644
--- a/actionpack/lib/action_view/helpers/form_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_helper.rb
@@ -610,9 +610,10 @@ module ActionView
       #   label(:post, :body)
       #   # => <label for="post_body">Write your entire text here</label>
       #
-      #   Localization can also be based purely on the translation of the attribute-name like this:
+      # Localization can also be based purely on the translation of the attribute-name
+      # (if you are using ActiveRecord):
       #
-      #   activemodel:
+      #   activerecord:
       #     attribute:
       #       post:
       #         cost: "Total cost"