diff --git a/zsnes/src/win/winlink.cpp b/zsnes/src/win/winlink.cpp
index 4f639d05..6fa47333 100644
--- a/zsnes/src/win/winlink.cpp
+++ b/zsnes/src/win/winlink.cpp
@@ -1978,7 +1978,7 @@ void initwinvideo(void)
         else
           SurfaceX = 640;
         SurfaceY=480;
-        if (NTSCFilter == 1)
+        if (NTSCFilter && WindowHeight == 600)
         {
           SurfaceX = 600;
           SurfaceY = 446;