--- a/gfx.c	Fri Nov 19 19:13:32 2004 +0000
+++ b/gfx.c	Fri Nov 19 21:57:02 2004 +0000
@@ -1426,7 +1426,7 @@
 			byte *src = bp.sprite_org;
 			signed char b;
 
-			bp.sprite += (dst - src);
+			bp.sprite = dst + (bp.sprite - bp.sprite_org);
 
 			while (totpix != 0) {
 				assert(totpix > 0);