diff --git a/panel/backends/wayland/wlroots/lxqttaskbarwlrwindowmanagment.h b/panel/backends/wayland/wlroots/lxqttaskbarwlrwindowmanagment.h
index 9e4dbb6e6..c79f174da 100644
--- a/panel/backends/wayland/wlroots/lxqttaskbarwlrwindowmanagment.h
+++ b/panel/backends/wayland/wlroots/lxqttaskbarwlrwindowmanagment.h
@@ -88,7 +88,7 @@ class LXQtTaskbarWlrootsWindow : public QObject,
 
     QIcon icon;
     WindowProperties windowState;
-    WId parentWindow;
+    WId parentWindow = 0;
 
 Q_SIGNALS:
     void titleChanged();