1 files changed, 1 insertions, 1 deletions
diff --git a/dom/base/test/fullscreen/test_fullscreen-api.html b/dom/base/test/fullscreen/test_fullscreen-api.html
index 2a59d6eeb0..ef07a5f97f 100644
--- a/dom/base/test/fullscreen/test_fullscreen-api.html
+++ b/dom/base/test/fullscreen/test_fullscreen-api.html
@@ -111,7 +111,7 @@ function runNextTest() {
           // otherwise, the fullscreen request might be denied.
           if (testWindow.document.hidden) {
             info("Waiting for document to unhide");
-            waitForEvent(testWindow.document, "visibilitychange", (event) => {
+            waitForEvent(testWindow.document, "visibilitychange", () => {
               return !testWindow.document.hidden;
             }, testWindow.begin);
             return;