diff --git a/actionpack/lib/action_controller/metal/helpers.rb b/actionpack/lib/action_controller/metal/helpers.rb
index 9e2d89960b..5988d5c577 100644
--- a/actionpack/lib/action_controller/metal/helpers.rb
+++ b/actionpack/lib/action_controller/metal/helpers.rb
@@ -11,7 +11,12 @@ module ActionController
#
# In previous versions of \Rails the controller will include a helper which
# matches the name of the controller, e.g., MyController will automatically
- # include MyHelper. To return old behavior set +config.action_controller.include_all_helpers+ to +false+.
+ # include MyHelper. You can revert to the old behavior with the following:
+ #
+ # # config/application.rb
+ # class Application < Rails::Application
+ # config.action_controller.include_all_helpers = false
+ # end
#
# Additional helpers can be specified using the +helper+ class method in ActionController::Base or any
# controller which inherits from it.