diff --git a/src/gui/accessible/linux/atspiadaptor.cpp b/src/gui/accessible/linux/atspiadaptor.cpp
index 8d53be8c42..a0c41fb7b3 100644
--- a/src/gui/accessible/linux/atspiadaptor.cpp
+++ b/src/gui/accessible/linux/atspiadaptor.cpp
@@ -804,7 +804,9 @@ void AtSpiAdaptor::windowActivated(QObject* window, bool active)
         return;
 
     QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(window);
-    Q_ASSERT(iface);
+    // If the window has been quickly activated or disabled, it will cause a crash.
+    if (iface == nullptr)
+        return;
     Q_ASSERT(!active || iface->isValid());
 
     QString windowTitle;