diff --git a/src/imports/FluentUI/Controls/FluPaneItemEmpty.qml b/src/imports/FluentUI/Controls/FluPaneItemEmpty.qml
index d4635e4f..c71c9fea 100644
--- a/src/imports/FluentUI/Controls/FluPaneItemEmpty.qml
+++ b/src/imports/FluentUI/Controls/FluPaneItemEmpty.qml
@@ -5,5 +5,6 @@ import FluentUI
 QtObject {
     readonly property string _key : FluTools.uuid()
     property int _idx
+    property var _ext
     property var parent
 }