diff --git a/sys/src/games/snes/snes.c b/sys/src/games/snes/snes.c
index 9316ebd0d..d80cf08b1 100644
--- a/sys/src/games/snes/snes.c
+++ b/sys/src/games/snes/snes.c
@@ -188,7 +188,7 @@ screeninit(void)
 void
 screenproc(void *)
 {
-	extern uchar pic[256*240*2*3];
+	extern uchar pic[256*239*2*3];
 	Mouse m;
 	Point p;