--- a/devtools/client/framework/test/browser.ini
+++ b/devtools/client/framework/test/browser.ini
@@ -37,16 +37,17 @@ support-files =
   doc_theme.css
   doc_viewsource.html
   browser_toolbox_options_enable_serviceworkers_testing_frame_script.js
   browser_toolbox_options_enable_serviceworkers_testing.html
   serviceworker.js
   sjs_code_reload.sjs
   sjs_code_bundle_reload_map.sjs
   test_browser_toolbox_debugger.js
+  !/devtools/client/debugger/new/test/mochitest/head.js
 
 [browser_browser_toolbox.js]
 [browser_browser_toolbox_debugger.js]
 skip-if = debug # Bug 1282269
 [browser_devtools_api.js]
 [browser_devtools_api_destroy.js]
 [browser_devtools_shim.js]
 [browser_dynamic_tool_enabling.js]