diff --git a/src/vid_tgui9440.c b/src/vid_tgui9440.c
index a2e13bd..2edf8c7 100644
--- a/src/vid_tgui9440.c
+++ b/src/vid_tgui9440.c
@@ -470,15 +470,6 @@ void tgui_recalctimings(svga_t *svga)
         if (svga->interlace && tgui->type < TGUI_9440)
                 svga->rowoffset >>= 1;
 
-        if (svga->crtc[0x17] & 4)
-        {
-                svga->vtotal *= 2;
-                svga->dispend *= 2;
-                svga->vsyncstart *= 2;
-                svga->split *= 2;
-                svga->vblankstart *= 2;
-        }
-        
         if (tgui->type >= TGUI_9440)
         {
                 if (svga->miscout & 8)