diff --git a/test/integration/lib/redmine/themes_test.rb b/test/integration/lib/redmine/themes_test.rb
index 65968afcf..200c0c286 100644
--- a/test/integration/lib/redmine/themes_test.rb
+++ b/test/integration/lib/redmine/themes_test.rb
@@ -37,6 +37,8 @@ class ThemesTest < Redmine::IntegrationTest
   end
 
   def test_without_theme_js
+    # simulate a state theme.js does not exists
+    @theme.javascripts.clear
     get '/'
 
     assert_response :success