diff --git a/sys/src/games/snes/ppu.c b/sys/src/games/snes/ppu.c
index 5edc52f5e..d88cc2044 100644
--- a/sys/src/games/snes/ppu.c
+++ b/sys/src/games/snes/ppu.c
@@ -757,6 +757,7 @@ ppustep(void)
 			reg[RDNMI] |= VBLANK;
 			if((reg[NMITIMEN] & VBLANK) != 0)
 				nmi = 2;
+			oamaddr = reg[0x2102] << 1 | (reg[0x2103] & 1) << 9;
 			if((reg[NMITIMEN] & AUTOJOY) != 0){
 				memwrite(0x4016, 1);
 				memwrite(0x4016, 0);