diff --git a/src/mame/drivers/asuka.c b/src/mame/drivers/asuka.c
index b428dc5bd24..9b73504c82d 100644
--- a/src/mame/drivers/asuka.c
+++ b/src/mame/drivers/asuka.c
@@ -639,6 +639,9 @@ static INPUT_PORTS_START( galmedes )
 
 	/* 0x400000 -> 0x100982 */
 	PORT_MODIFY("DSWA")
+	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Demo_Sounds ) )	PORT_DIPLOCATION("SWA:4")
+	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) )		PORT_DIPLOCATION("SWA:5,6")
 	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) ) PORT_CONDITION("DSWB",0x80,PORTCOND_EQUALS,0x00)
 	PORT_DIPSETTING(    0x10, DEF_STR( 3C_1C ) ) PORT_CONDITION("DSWB",0x80,PORTCOND_EQUALS,0x00)