diff --git a/test/unit/project_nested_set_test.rb b/test/unit/project_nested_set_test.rb
index 776fe9e21..fe31be205 100644
--- a/test/unit/project_nested_set_test.rb
+++ b/test/unit/project_nested_set_test.rb
@@ -22,6 +22,7 @@ class ProjectNestedSetTest < ActiveSupport::TestCase
   def setup
     Project.delete_all
     Tracker.delete_all
+    EnabledModule.delete_all
 
     @a = Project.create!(:name => 'A', :identifier => 'projecta')
     @a1 = Project.create!(:name => 'A1', :identifier => 'projecta1')