--- a/browser/base/content/test/static/browser_all_files_referenced.js
+++ b/browser/base/content/test/static/browser_all_files_referenced.js
@@ -18,16 +18,19 @@ var gExceptionPaths = [
   "resource://app/defaults/preferences/",
   "resource://gre/modules/commonjs/",
   "resource://gre/defaults/pref/",
   "resource://shield-recipe-client/node_modules/jexl/lib/",
 
   // https://github.com/mozilla/normandy/issues/577
   "resource://shield-recipe-client/test/",
 
+  // https://github.com/mozilla/activity-stream/issues/3053
+  "resource://activity-stream/data/content/tippytop/images/",
+
   // browser/extensions/pdfjs/content/build/pdf.js#1999
   "resource://pdf.js/web/images/",
 ];
 
 // These are not part of the omni.ja file, so we find them only when running
 // the test on a non-packaged build.
 if (AppConstants.platform == "macosx")
   gExceptionPaths.push("resource://gre/res/cursors/");