--- a/src/request.cpp
+++ b/src/request.cpp
@@ -305,7 +305,10 @@ QString Request::id() const
 void Request::setWidget(QWidget *widget)
 {
     Q_D(Request);
-    if (d->setWindow(widget->windowHandle())) {
+    if (widget) {
+	QWindow *whandle = widget->windowHandle();
+	if (whandle)
+	    d->setWindow(whandle);
         widget->show();
     }
 }