diff --git a/gfx.h b/gfx.h
index 84d03ad0..bfbbcdd7 100644
--- a/gfx.h
+++ b/gfx.h
@@ -15,7 +15,7 @@ struct SGFX
 
 	const uint32 Pitch = sizeof(uint16) * MAX_SNES_WIDTH;
 	const uint32 RealPPL = MAX_SNES_WIDTH; // true PPL of Screen buffer
-	const uint32 ScreenSize =  MAX_SNES_WIDTH * SNES_HEIGHT_EXTENDED;
+	const uint32 ScreenSize =  MAX_SNES_WIDTH * MAX_SNES_HEIGHT;
 	uint16 ScreenBuffer[512 * (478 + 64)];
 	uint16	*Screen;
 	uint16	*SubScreen;