diff --git a/src/plugins/platforms/cocoa/qcocoascreen.mm b/src/plugins/platforms/cocoa/qcocoascreen.mm
index 55526d6cdc7..bdecf6fa80d 100644
--- a/src/plugins/platforms/cocoa/qcocoascreen.mm
+++ b/src/plugins/platforms/cocoa/qcocoascreen.mm
@@ -421,22 +421,26 @@ void QCocoaScreen::deliverUpdateRequests()
         auto windows = QGuiApplication::allWindows();
         for (int i = 0; i < windows.size(); ++i) {
             QWindow *window = windows.at(i);
-            auto *platformWindow = static_cast<QCocoaWindow*>(window->handle());
+            if (window->screen() != screen())
+                continue;
+
+            QPointer<QCocoaWindow> platformWindow = static_cast<QCocoaWindow*>(window->handle());
             if (!platformWindow)
                 continue;
 
             if (!platformWindow->hasPendingUpdateRequest())
                 continue;
 
-            if (window->screen() != screen())
-                continue;
-
             // Skip windows that are not doing update requests via display link
             if (!platformWindow->updatesWithDisplayLink())
                 continue;
 
             platformWindow->deliverUpdateRequest();
 
+            // platform window can be destroyed in deliverUpdateRequest()
+            if (!platformWindow)
+                continue;
+
             // Another update request was triggered, keep the display link running
             if (platformWindow->hasPendingUpdateRequest())
                 pauseUpdates = false;