diff --git a/src/mame/drivers/supbtime.c b/src/mame/drivers/supbtime.c
index 7c6c6272729..e092d2ba5ca 100644
--- a/src/mame/drivers/supbtime.c
+++ b/src/mame/drivers/supbtime.c
@@ -409,6 +409,8 @@ static MACHINE_CONFIG_START( chinatwn, supbtime_state )
 	MCFG_PALETTE_LENGTH(1024)
 
 	MCFG_DECO16IC_ADD("deco_custom", supbtime_deco16ic_intf)
+	MCFG_DEVICE_ADD("spritegen", decospr_, 0)
+	decospr_device_config::set_gfx_region(device, 2);
 
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")