diff --git a/src/abstract_client.cpp b/src/abstract_client.cpp
index e5c72d948f..9c53729d1b 100644
--- a/src/abstract_client.cpp
+++ b/src/abstract_client.cpp
@@ -308,6 +308,8 @@ Layer AbstractClient::belongsToLayer() const
         return ActiveLayer;
     if (keepAbove())
         return AboveLayer;
+    if (isPopupWindow())
+        return UnmanagedLayer;
 
     return NormalLayer;
 }