diff --git a/actionpack/lib/action_controller/caching.rb b/actionpack/lib/action_controller/caching.rb
index 1d14df0052..80d13e25f1 100644
--- a/actionpack/lib/action_controller/caching.rb
+++ b/actionpack/lib/action_controller/caching.rb
@@ -27,6 +27,7 @@ module ActionController #:nodoc:
     autoload :Actions, 'action_controller/caching/actions'
     autoload :Fragments, 'action_controller/caching/fragments'
     autoload :Pages, 'action_controller/caching/pages'
+    autoload :Sweeper, 'action_controller/caching/sweeping'
     autoload :Sweeping, 'action_controller/caching/sweeping'
 
     def self.included(base) #:nodoc: