1 files changed, 4 insertions, 2 deletions
diff --git a/src/widgets/dialogs/qdialog.cpp b/src/widgets/dialogs/qdialog.cpp
index 464a1e139e..8dfcf2c6d6 100644
--- a/src/widgets/dialogs/qdialog.cpp
+++ b/src/widgets/dialogs/qdialog.cpp
@@ -849,8 +849,10 @@ void QDialog::adjustPosition(QWidget* w)
     // QTBUG-52735: Manually set the correct target screen since scaling in a
     // subsequent call to QWindow::resize() may otherwise use the wrong factor
     // if the screen changed notification is still in an event queue.
-    if (QWindow *window = windowHandle())
-        window->setScreen(QGuiApplication::screens().at(scrn));
+    if (scrn >= 0) {
+        if (QWindow *window = windowHandle())
+            window->setScreen(QGuiApplication::screens().at(scrn));
+    }
 
     move(p);
 }