diff --git a/resources/qml/Cura.qml b/resources/qml/Cura.qml
index bd9979335b..3b06af677d 100644
--- a/resources/qml/Cura.qml
+++ b/resources/qml/Cura.qml
@@ -571,7 +571,7 @@ UM.MainWindow
         id: contextMenu
     }
 
-    onPreClosing:
+    onPreClosing: (close) =>
     {
         close.accepted = CuraApplication.getIsAllChecksPassed();
         if (!close.accepted)