--- a/browser/base/content/test/performance/browser_startup.js
+++ b/browser/base/content/test/performance/browser_startup.js
@@ -63,16 +63,17 @@ const startupPhases = {
     components: new Set([
       "PageIconProtocolHandler.js",
       "PlacesCategoriesStarter.js",
       "UnifiedComplete.js",
       "nsPlacesExpiration.js",
       "nsSearchService.js",
     ]),
     modules: new Set([
+      "chrome://webcompat-reporter/content/TabListener.jsm",
       "resource:///modules/AboutNewTab.jsm",
       "resource:///modules/DirectoryLinksProvider.jsm",
       "resource://gre/modules/BookmarkHTMLUtils.jsm",
       "resource://gre/modules/Bookmarks.jsm",
       "resource://gre/modules/ContextualIdentityService.jsm",
       "resource://gre/modules/NewTabUtils.jsm",
       "resource://gre/modules/PageThumbs.jsm",
       "resource://gre/modules/PlacesSyncUtils.jsm",