1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/thumbnails/test/browser_thumbnails_storage.js b/toolkit/components/thumbnails/test/browser_thumbnails_storage.js
index 6a9f1ed3f6..39d26897a2 100644
--- a/toolkit/components/thumbnails/test/browser_thumbnails_storage.js
+++ b/toolkit/components/thumbnails/test/browser_thumbnails_storage.js
@@ -89,7 +89,7 @@ async function promiseCreateThumbnail() {
       gBrowser,
       url: URL,
     },
-    async browser => {
+    async () => {
       gBrowserThumbnails.clearTopSiteURLCache();
       await whenFileExists(URL);
     }