diff --git a/src/plugins/qmldesigner/libs/designercore/include/widgetregistration.h b/src/plugins/qmldesigner/libs/designercore/include/widgetregistration.h
index c741831e12d..ea4ad010190 100644
--- a/src/plugins/qmldesigner/libs/designercore/include/widgetregistration.h
+++ b/src/plugins/qmldesigner/libs/designercore/include/widgetregistration.h
@@ -12,6 +12,9 @@ class WidgetRegistrationInterface
 public:
     virtual void registerWidgetInfo(WidgetInfo) = 0;
     virtual void deregisterWidgetInfo(WidgetInfo) = 0;
+
+protected:
+    ~WidgetRegistrationInterface() = default;
 };
 
 } // namespace QmlDesigner