diff --git a/src/plugins/platforms/ios/quiview.mm b/src/plugins/platforms/ios/quiview.mm
index 29afae7176..8db36705c0 100644
--- a/src/plugins/platforms/ios/quiview.mm
+++ b/src/plugins/platforms/ios/quiview.mm
@@ -440,7 +440,8 @@ Q_LOGGING_CATEGORY(lcQpaTablet, "qt.qpa.input.tablet")
     if (m_activeTouches.isEmpty())
             return;
 
-    if (!static_cast<QUIWindow *>(self.window).sendingEvent) {
+    if ([self.window isKindOfClass:[QUIWindow class]] &&
+            !static_cast<QUIWindow *>(self.window).sendingEvent) {
         // The event is likely delivered as part of delayed touch delivery, via
         // _UIGestureEnvironmentSortAndSendDelayedTouches, due to one of the two
         // _UISystemGestureGateGestureRecognizer instances on the top level window