diff --git a/test/functional/auth_sources_controller_test.rb b/test/functional/auth_sources_controller_test.rb
index bd97844e..348e0e09 100644
--- a/test/functional/auth_sources_controller_test.rb
+++ b/test/functional/auth_sources_controller_test.rb
@@ -1,4 +1,4 @@
-require 'test_helper'
+require File.dirname(__FILE__) + '/../test_helper'
 
 class AuthSourcesControllerTest < ActionController::TestCase
   fixtures :all
diff --git a/test/functional/calendars_controller_test.rb b/test/functional/calendars_controller_test.rb
index 79cfe28a..ad047c66 100644
--- a/test/functional/calendars_controller_test.rb
+++ b/test/functional/calendars_controller_test.rb
@@ -1,4 +1,4 @@
-require 'test_helper'
+require File.dirname(__FILE__) + '/../test_helper'
 
 class CalendarsControllerTest < ActionController::TestCase
   fixtures :all
diff --git a/test/functional/gantts_controller_test.rb b/test/functional/gantts_controller_test.rb
index 4c27de7c..24c84f2a 100644
--- a/test/functional/gantts_controller_test.rb
+++ b/test/functional/gantts_controller_test.rb
@@ -1,4 +1,4 @@
-require 'test_helper'
+require File.dirname(__FILE__) + '/../test_helper'
 
 class GanttsControllerTest < ActionController::TestCase
   fixtures :all