diff --git a/actionpack/lib/action_controller/metal.rb b/actionpack/lib/action_controller/metal.rb
index b38f990efaf8ec41350c0a5af6e46333d03c4bbf..2a9afccf7dd9a779fb25d66af862540a5b234303 100644
--- a/actionpack/lib/action_controller/metal.rb
+++ b/actionpack/lib/action_controller/metal.rb
@@ -112,7 +112,7 @@ def env
     # ==== Returns
     # * <tt>string</tt>
     def self.controller_name
-      @controller_name ||= self.name.demodulize.sub(/Controller$/, '').underscore
+      @controller_name ||= name.demodulize.sub(/Controller$/, '').underscore
     end
 
     # Delegates to the class' <tt>controller_name</tt>