1 files changed, 1 insertions, 1 deletions
diff --git a/browser/extensions/pictureinpicture/video-wrappers/primeVideo.js b/browser/extensions/pictureinpicture/video-wrappers/primeVideo.js
index 28a2bd1575..1d23903102 100644
--- a/browser/extensions/pictureinpicture/video-wrappers/primeVideo.js
+++ b/browser/extensions/pictureinpicture/video-wrappers/primeVideo.js
@@ -57,7 +57,7 @@ class PictureInPictureVideoWrapper {
 
     if (container) {
       updateCaptionsFunction("");
-      const callback = function (mutationsList, observer) {
+      const callback = function (mutationsList) {
         // eslint-disable-next-line no-unused-vars
         for (const mutation of mutationsList) {
           let text;