diff --git a/actionpack/lib/action_controller/caching/actions.rb b/actionpack/lib/action_controller/caching/actions.rb
index f6b23e4efc..f988de39dd 100644
--- a/actionpack/lib/action_controller/caching/actions.rb
+++ b/actionpack/lib/action_controller/caching/actions.rb
@@ -175,7 +175,7 @@ module ActionController #:nodoc:
       private
         def normalize!(path)
           path << 'index' if path[-1] == ?/
-          path << ".#{extension}" if extension and !path.split('?').first.try(:ends_with?, ".#{extension}")
+          path << ".#{extension}" if extension and !path.split('?').first.ends_with?(".#{extension}")
           URI.parser.unescape(path)
         end
       end