1 files changed, 3 insertions, 3 deletions
diff --git a/dom/messagechannel/tests/test_removedWindow.html b/dom/messagechannel/tests/test_removedWindow.html
index b660000fd8..0413a7afeb 100644
--- a/dom/messagechannel/tests/test_removedWindow.html
+++ b/dom/messagechannel/tests/test_removedWindow.html
@@ -30,13 +30,13 @@ async function runTest() {
 
   // This should silently fail.
   pre.port1.postMessage(42);
-  pre.port2.onmessage = e => {
+  pre.port2.onmessage = () => {
     ok(false, "No messages should be received!");
   }
 
   // This should silently fail.
   post.port1.postMessage(42);
-  post.port2.onmessage = e => {
+  post.port2.onmessage = () => {
     ok(false, "No messages should be received!");
   }
 
@@ -45,7 +45,7 @@ async function runTest() {
 
   let mc = new MessageChannel();
   mc.port1.postMessage(42);
-  mc.port2.onmessage = e => {
+  mc.port2.onmessage = () => {
     ok(true, "Ready to complete the test");
     SimpleTest.finish();
   }