diff --git a/src/testlib/qtesthelpers_p.h b/src/testlib/qtesthelpers_p.h
index efe28c4f004..100ad8c2f9b 100644
--- a/src/testlib/qtesthelpers_p.h
+++ b/src/testlib/qtesthelpers_p.h
@@ -24,6 +24,7 @@
 #ifdef QT_GUI_LIB
 #include <QtGui/QGuiApplication>
 #include <QtGui/QScreen>
+#include <QtGui/QWindow>
 #endif
 
 #ifdef QT_WIDGETS_LIB
@@ -91,6 +92,24 @@ static inline void androidCompatibleShow(QWidget *widget)
 }
 #endif // QT_WIDGETS_LIB
 
+#ifdef QT_GUI_LIB
+bool ensurePositionTopLeft(QWindow *window)
+{
+    const QPoint availableTopLeft = QGuiApplication::primaryScreen()->availableGeometry().topLeft();
+    window->setFramePosition(availableTopLeft);
+    bool positionCorrect = true;
+
+    if (!window->flags().testFlag(Qt::FramelessWindowHint))
+        positionCorrect = QTest::qWaitFor([&]{ return window->framePosition() != window->position() ;});
+
+    const bool positionUpdated = QTest::qWaitFor([&]{ return window->framePosition() == availableTopLeft ;});
+    if (!positionUpdated)
+        positionCorrect = false;
+
+    return positionCorrect;
+}
+#endif
+
 #ifdef QT_NETWORK_LIB
 inline bool isSecureTransportBlockingTest()
 {
diff --git a/tests/auto/gui/kernel/qwindow/CMakeLists.txt b/tests/auto/gui/kernel/qwindow/CMakeLists.txt
index 5824989ac34..8fa49f1e5dc 100644
--- a/tests/auto/gui/kernel/qwindow/CMakeLists.txt
+++ b/tests/auto/gui/kernel/qwindow/CMakeLists.txt
@@ -18,6 +18,7 @@ qt_internal_add_test(tst_qwindow
         Qt::CorePrivate
         Qt::Gui
         Qt::GuiPrivate
+        Qt::TestPrivate
 )
 
 if(APPLE OR WIN32 OR QT_FEATURE_xcb)