diff --git a/src/common/platform/posix/sdl/i_input.cpp b/src/common/platform/posix/sdl/i_input.cpp
index 6b34e6d64..846796831 100644
--- a/src/common/platform/posix/sdl/i_input.cpp
+++ b/src/common/platform/posix/sdl/i_input.cpp
@@ -225,14 +225,10 @@ static void MouseRead ()
 	}
 
 	SDL_GetRelativeMouseState (&x, &y);
-	if (!m_noprescale)
-	{
-		x *= 3;
-		y *= 2;
-	}
+
 	if (x | y)
 	{
-		PostMouseMove (x, -y);
+		PostMouseMove (m_noprescale ? x : x << 2, -y);
 	}
 }