diff --git a/applets/appmenu/plugin/appmenumodel.h b/applets/appmenu/plugin/appmenumodel.h
--- a/applets/appmenu/plugin/appmenumodel.h
+++ b/applets/appmenu/plugin/appmenumodel.h
@@ -76,7 +76,7 @@
     bool m_menuAvailable;
     bool m_updatePending = false;
 
-    WId m_currentWindowId = 0;
+    WId m_delayedMenuWindowId = 0;
 
     QPointer<QMenu> m_menu;
 
diff --git a/applets/appmenu/plugin/appmenumodel.cpp b/applets/appmenu/plugin/appmenumodel.cpp
--- a/applets/appmenu/plugin/appmenumodel.cpp
+++ b/applets/appmenu/plugin/appmenumodel.cpp
@@ -203,7 +203,7 @@
         // monitor whether an app menu becomes available later
         // this can happen when an app starts, shows its window, and only later announces global menu (e.g. Firefox)
         qApp->installNativeEventFilter(this);
-        m_currentWindowId = id;
+        m_delayedMenuWindowId = id;
 
         //no menu found, set it to unavailable
         setMenuAvailable(false);
@@ -321,7 +321,7 @@
     const uint8_t type = e->response_type & ~0x80;
     if (type == XCB_PROPERTY_NOTIFY) {
         auto *event = reinterpret_cast<xcb_property_notify_event_t *>(e);
-        if (event->window == m_currentWindowId) {
+        if (event->window == m_delayedMenuWindowId) {
 
             auto serviceNameAtom = s_atoms.value(s_x11AppMenuServiceNamePropertyName);
             auto objectPathAtom = s_atoms.value(s_x11AppMenuObjectPathPropertyName);