1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/extensions/test/mochitest/test_ext_storage_cleanup.html b/toolkit/components/extensions/test/mochitest/test_ext_storage_cleanup.html
index 33029cf61e..e6a885a3c7 100644
--- a/toolkit/components/extensions/test/mochitest/test_ext_storage_cleanup.html
+++ b/toolkit/components/extensions/test/mochitest/test_ext_storage_cleanup.html
@@ -71,7 +71,7 @@ const storageTestHelpers = {
           reject(new Error(`indexedDB open failed with ${e.errorCode}`));
         };
 
-        req.onupgradeneeded = e => {
+        req.onupgradeneeded = () => {
           // no database, data is not present
           resolve(false);
         };