diff --git a/test/unit/issue_relation_test.rb b/test/unit/issue_relation_test.rb
index 1b76056..3bcf06b 100644
--- a/test/unit/issue_relation_test.rb
+++ b/test/unit/issue_relation_test.rb
@@ -28,7 +28,8 @@ class IssueRelationTest < ActiveSupport::TestCase
            :issue_relations,
            :enabled_modules,
            :enumerations,
-           :trackers
+           :trackers,
+           :projects_trackers
 
   include Redmine::I18n