2 files changed, 6 insertions, 5 deletions
diff --git a/actionpack/lib/action_controller/railties/routes_helpers.rb b/actionpack/lib/abstract_controller/railties/routes_helpers.rb
index a23f703f0b..dec1e9d6d9 100644
--- a/actionpack/lib/action_controller/railties/routes_helpers.rb
+++ b/actionpack/lib/abstract_controller/railties/routes_helpers.rb
@@ -1,4 +1,4 @@
-module ActionController
+module AbstractController
   module Railties
     module RoutesHelpers
       def self.with(routes)
@@ -6,9 +6,10 @@ module ActionController
           define_method(:inherited) do |klass|
             super(klass)
             if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
-              routes = namespace._railtie.routes
+              klass.send(:include, namespace._railtie.routes.url_helpers)
+            else
+              klass.send(:include, routes.url_helpers)
             end
-            klass.send(:include, routes.url_helpers)
           end
         end
       end
diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index 23622b19e8..4b5a897b90 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -4,7 +4,7 @@ require "action_dispatch/railtie"
 require "action_view/railtie"
 require "active_support/deprecation/proxy_wrappers"
 require "active_support/deprecation"
-require "action_controller/railties/routes_helpers"
+require "abstract_controller/railties/routes_helpers"
 
 module ActionController
   class Railtie < Rails::Railtie
@@ -51,7 +51,7 @@ module ActionController
       options.helpers_path         ||= paths.app.helpers.to_a
 
       ActiveSupport.on_load(:action_controller) do
-        extend ::ActionController::Railties::RoutesHelpers.with(app.routes)
+        extend ::AbstractController::Railties::RoutesHelpers.with(app.routes)
         include app.routes.mounted_helpers(:app)
         options.each { |k,v| send("#{k}=", v) }
       end