diff --git a/test/functional/ldap_auth_sources_controller.rb b/test/functional/ldap_auth_sources_controller.rb
index f0ae17a9e..5c045d59c 100644
--- a/test/functional/ldap_auth_sources_controller.rb
+++ b/test/functional/ldap_auth_sources_controller.rb
@@ -1,4 +1,4 @@
-require 'test_helper'
+require File.expand_path('../../test_helper', __FILE__)
 
 class LdapAuthSourcesControllerTest < ActionController::TestCase
   fixtures :all