diff --git a/src/video/cocoa/wnd_quartz.mm b/src/video/cocoa/wnd_quartz.mm
index 28603d8e4b..bb1f2850ee 100644
--- a/src/video/cocoa/wnd_quartz.mm
+++ b/src/video/cocoa/wnd_quartz.mm
@@ -690,9 +690,10 @@ CGPoint WindowQuartzSubdriver::PrivateLocalToCG(NSPoint* p)
 {
 	CGPoint cgp;
 
+	p->y = window_height - p->y;
 	*p = [ qzview convertPoint:*p toView: nil ];
 	*p = [ window convertBaseToScreen:*p ];
-	p->y = window_height - p->y;
+	p->y = device_height - p->y;
 
 	cgp.x = p->x;
 	cgp.y = p->y;
diff --git a/src/video/cocoa/wnd_quickdraw.mm b/src/video/cocoa/wnd_quickdraw.mm
index 4c125ae38d..41d807bee0 100644
--- a/src/video/cocoa/wnd_quickdraw.mm
+++ b/src/video/cocoa/wnd_quickdraw.mm
@@ -717,7 +717,7 @@ CGPoint WindowQuickdrawSubdriver::PrivateLocalToCG(NSPoint* p)
 
 	*p = [ qdview convertPoint:*p toView: nil ];
 	*p = [ window convertBaseToScreen:*p ];
-	p->y = window_height - p->y;
+	p->y = device_height - p->y;
 
 	cgp.x = p->x;
 	cgp.y = p->y;