diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index 30b7313..0a95534 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -2561,6 +2561,8 @@ QWidget::macCGHandle() const
 void QWidget::destroy(bool destroyWindow, bool destroySubWindows)
 {
     Q_D(QWidget);
+    if (qt_mouseover == this)
+        qt_mouseover = 0;
     if (!isWindow() && parentWidget())
         parentWidget()->d_func()->invalidateBuffer(geometry());
     d->deactivateWidgetCleanup();