1 files changed, 1 insertions, 1 deletions
diff --git a/dom/base/test/fullscreen/browser_fullscreen-navigation-history-race.js b/dom/base/test/fullscreen/browser_fullscreen-navigation-history-race.js
index 2ea2b9ee40..49a48c3177 100644
--- a/dom/base/test/fullscreen/browser_fullscreen-navigation-history-race.js
+++ b/dom/base/test/fullscreen/browser_fullscreen-navigation-history-race.js
@@ -82,7 +82,7 @@ function preventBFCache(aBrowsingContext, aPrevent) {
               let target = content.document.getElementById("div");
               target.addEventListener(
                 "mousedown",
-                function (e) {
+                function () {
                   content.window.history.back();
                 },
                 { once: true }