diff --git a/src/routes/Player/Video/stremio-video/HTMLSubtitles.js b/src/routes/Player/Video/stremio-video/HTMLSubtitles.js
index fd4cffb57..698847857 100644
--- a/src/routes/Player/Video/stremio-video/HTMLSubtitles.js
+++ b/src/routes/Player/Video/stremio-video/HTMLSubtitles.js
@@ -165,6 +165,8 @@ var HTMLSubtitles = function(containerElement) {
         containerElement.removeChild(stylesElement);
         containerElement.removeChild(subtitlesElement);
     };
+
+    Object.freeze(this);
 };
 
 module.exports = HTMLSubtitles;
diff --git a/src/routes/Player/Video/stremio-video/HTMLVideo.js b/src/routes/Player/Video/stremio-video/HTMLVideo.js
index 50b6add5c..b2c376ddf 100644
--- a/src/routes/Player/Video/stremio-video/HTMLVideo.js
+++ b/src/routes/Player/Video/stremio-video/HTMLVideo.js
@@ -397,6 +397,8 @@ var HTMLVideo = function(containerElement) {
             dispatchArgsQueue.push(Array.from(arguments));
         }
     };
+
+    Object.freeze(this);
 };
 
 HTMLVideo.manifest = Object.freeze({