diff --git a/actionpack/lib/action_dispatch/routing/url_for.rb b/actionpack/lib/action_dispatch/routing/url_for.rb
index 517794457529e425727cf83f63783965875b50f2..d4cd537048266e04a320e597ab2a04d7cdb461c5 100644
--- a/actionpack/lib/action_dispatch/routing/url_for.rb
+++ b/actionpack/lib/action_dispatch/routing/url_for.rb
@@ -96,7 +96,7 @@ module UrlFor
           self.default_url_options = {}
         end
 
-        include *_url_for_modules if respond_to?(:_url_for_modules)
+        include(*_url_for_modules) if respond_to?(:_url_for_modules)
       end
 
       def initialize(*)