--- a/browser/base/content/browser-loop.js
+++ b/browser/base/content/browser-loop.js
@@ -232,18 +232,19 @@ XPCOMUtils.defineLazyModuleGetter(this, 
         body: options.message || ""
       };
       if (options.icon) {
         notificationOptions.icon = options.icon;
       }
       if (options.sound) {
         // This will not do anything, until bug bug 1105222 is resolved.
         notificationOptions.mozbehavior = {
-          soundFile: `chrome://browser/content/loop/shared/sounds/${options.sound}.ogg`
+          soundFile: ""
         };
+        this.playSound(options.sound);
       }
 
       let notification = new window.Notification(options.title, notificationOptions);
       notification.addEventListener("click", e => {
         if (window.closed) {
           return;
         }