diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.mm b/src/plugins/platforms/cocoa/qcocoaintegration.mm
index d48722b82f..7e9f554520 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.mm
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.mm
@@ -122,8 +122,8 @@ void QCocoaScreen::updateGeometry()
     // At this point the geometry is in native coordinates, but the size
     // is correct, which we take advantage of next when we map the native
     // coordinates to the Qt coordinate system.
-    m_geometry = QRectF::fromCGRect(m_nsScreen.frame).toRect();
-    m_availableGeometry = QRectF::fromCGRect(m_nsScreen.visibleFrame).toRect();
+    m_geometry = QRectF::fromCGRect(NSRectToCGRect(m_nsScreen.frame)).toRect();
+    m_availableGeometry = QRectF::fromCGRect(NSRectToCGRect(m_nsScreen.visibleFrame)).toRect();
 
     // The reference screen for the geometry is always the primary screen, but since
     // we may be in the process of creating and registering the primary screen, we
diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index dfaed9923e..30ac79f3a0 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -1662,7 +1662,7 @@ QCocoaNSWindow *QCocoaWindow::createNSWindow(bool shouldBeChildNSWindow, bool sh
 
     rect.translate(-targetScreen->geometry().topLeft());
     QCocoaScreen *cocoaScreen = static_cast<QCocoaScreen *>(targetScreen->handle());
-    NSRect frame = cocoaScreen->mapToNative(rect).toCGRect();
+    NSRect frame = NSRectFromCGRect(cocoaScreen->mapToNative(rect).toCGRect());
 
     // Note: The macOS window manager has a bug, where if a screen is rotated, it will not allow
     // a window to be created within the area of the screen that has a Y coordinate (I quadrant)