diff --git a/src/common/platform/posix/cocoa/i_input.mm b/src/common/platform/posix/cocoa/i_input.mm
index 9c09cbced..3b562bcb8 100644
--- a/src/common/platform/posix/cocoa/i_input.mm
+++ b/src/common/platform/posix/cocoa/i_input.mm
@@ -497,7 +497,8 @@ void ProcessMouseMoveInGame(NSEvent* theEvent)
 
 	if (!m_noprescale)
 	{
-		x <<= 2;
+		x *= 3;
+		y *= 2;
 	}
 
 	event_t event = {};