diff --git a/test/helpers/activities_helper_test.rb b/test/helpers/activities_helper_test.rb
index 8f86aca9a..3e25bf52e 100644
--- a/test/helpers/activities_helper_test.rb
+++ b/test/helpers/activities_helper_test.rb
@@ -22,6 +22,8 @@ require File.expand_path('../../test_helper', __FILE__)
 class ActivitiesHelperTest < Redmine::HelperTest
   include ActivitiesHelper
 
+  fixtures :projects, :members, :users
+
   class MockEvent
     attr_reader :event_datetime, :event_group, :name