1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/antitracking/test/browser/workerIframe.html b/toolkit/components/antitracking/test/browser/workerIframe.html
index 37aa5d7c0d..c31d9ff854 100644
--- a/toolkit/components/antitracking/test/browser/workerIframe.html
+++ b/toolkit/components/antitracking/test/browser/workerIframe.html
@@ -21,7 +21,7 @@ function is(a, b, msg) {
 
 async function runTest() {
   function workerCode() {
-    onmessage = e => {
+    onmessage = () => {
       try {
         indexedDB.open("test", "1");
         postMessage(true);