diff --git a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
index c40ae3d81d..3ec6ad7a20 100644
--- a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
+++ b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
@@ -113,6 +113,7 @@ static void cleanupCocoaApplicationDelegate()
 
 - (void)updateScreens:(NSNotification *)notification
 {
+    Q_UNUSED(notification);
     if (QCocoaIntegration *ci = dynamic_cast<QCocoaIntegration *>(QGuiApplicationPrivate::platformIntegration()))
         ci->updateScreens();
 }