diff --git a/public/react/src/common/components/media/Clappr.js b/public/react/src/common/components/media/Clappr.js
index 995200574..673a7b4ff 100644
--- a/public/react/src/common/components/media/Clappr.js
+++ b/public/react/src/common/components/media/Clappr.js
@@ -26,6 +26,7 @@ class Clappr extends Component{
     }
     // && window['clappr-playback-rate-plugin']
     if (window['Clappr'] ) {
+      // https://github.com/clappr/clappr/issues/1839
       // http://clappr.github.io/classes/Player.html#method_mute
         this['player'+id] = new window.Clappr.Player({
             source: source, parentId: _id,