1 files changed, 1 insertions, 1 deletions
diff --git a/browser/components/customizableui/test/browser_switch_to_customize_mode.js b/browser/components/customizableui/test/browser_switch_to_customize_mode.js
index 55e80d3517..e3988cb41e 100644
--- a/browser/components/customizableui/test/browser_switch_to_customize_mode.js
+++ b/browser/components/customizableui/test/browser_switch_to_customize_mode.js
@@ -18,7 +18,7 @@ add_task(async function () {
   await finishedCustomizing;
 
   let startedCount = 0;
-  let handler = e => startedCount++;
+  let handler = () => startedCount++;
   gNavToolbox.addEventListener("customizationstarting", handler);
   await startCustomizing();
   CustomizableUI.removeWidgetFromArea("stop-reload-button");