diff --git a/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs b/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs
index d2a2b7b3bf..0ffef01a66 100644
--- a/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs
+++ b/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs
@@ -155,7 +155,7 @@ namespace Avalonia.Controls.Notifications
 
             if (adornerLayer != null)
             {
-                adornerLayer.Children.Add(this as IControl);
+                adornerLayer.Children.Add(this);
             }
         }
     }