diff --git a/test/unit/helpers/watchers_helper_test.rb b/test/unit/helpers/watchers_helper_test.rb
index ce4527469..ddc919079 100644
--- a/test/unit/helpers/watchers_helper_test.rb
+++ b/test/unit/helpers/watchers_helper_test.rb
@@ -20,6 +20,7 @@ require File.expand_path('../../../test_helper', __FILE__)
 class WatchersHelperTest < ActionView::TestCase
   include WatchersHelper
   include Redmine::I18n
+  include Rails.application.routes.url_helpers
 
   fixtures :users, :issues