diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 50fd3b4ea..d69d31b9b 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2403,8 +2403,13 @@ const MessageTray = new Lang.Class({
         if (this._notificationWidget.y < expandedY) {
             this._notificationWidget.y = expandedY;
         } else if (this._notification.y != expandedY) {
+            // Tween also opacity here, to override a possible tween that's
+            // currently hiding the notification. This will ensure that the
+            // notification is not removed when the onComplete handler for this
+            // one triggers.
             this._tween(this._notificationWidget, '_notificationState', State.SHOWN,
                         { y: expandedY,
+                          opacity: 255,
                           time: ANIMATION_TIME,
                           transition: 'easeOutQuad'
                         });