diff --git a/railties/lib/rails/test_help.rb b/railties/lib/rails/test_help.rb
index <HASH>..<HASH> 100644
--- a/railties/lib/rails/test_help.rb
+++ b/railties/lib/rails/test_help.rb
@@ -4,6 +4,7 @@ abort("Abort testing: Your Rails environment is running in production mode!") if
 
 require 'active_support/testing/autorun'
 require 'active_support/test_case'
+require 'action_controller'
 require 'action_controller/test_case'
 require 'action_dispatch/testing/integration'
 require 'rails/generators/test_case'
Require action_controller before any other action_controller file

This will load properly the loading hooks.

Closes rails/sass-rails#<I>