diff --git a/lib/cancan/controller_additions.rb b/lib/cancan/controller_additions.rb
index 746bf4c..3e5c472 100644
--- a/lib/cancan/controller_additions.rb
+++ b/lib/cancan/controller_additions.rb
@@ -385,7 +385,7 @@ module CanCan
   end
 end
 
-if defined? ActionController
+if defined? ActionController::Base
   ActionController::Base.class_eval do
     include CanCan::ControllerAdditions
   end