1 files changed, 1 insertions, 1 deletions
diff --git a/browser/extensions/pictureinpicture/video-wrappers/airmozilla.js b/browser/extensions/pictureinpicture/video-wrappers/airmozilla.js
index d2e98cbe48..a669154a44 100644
--- a/browser/extensions/pictureinpicture/video-wrappers/airmozilla.js
+++ b/browser/extensions/pictureinpicture/video-wrappers/airmozilla.js
@@ -35,7 +35,7 @@ class PictureInPictureVideoWrapper {
 
     if (container) {
       updateCaptionsFunction("");
-      const callback = function (mutationsList, observer) {
+      const callback = function () {
         let text = container?.querySelector("#overlayCaption").innerText;
 
         if (!text) {