diff --git a/src/mame/drivers/playmark.cpp b/src/mame/drivers/playmark.cpp
index cc7ddf29668..d39c19e7ce3 100644
--- a/src/mame/drivers/playmark.cpp
+++ b/src/mame/drivers/playmark.cpp
@@ -555,6 +555,18 @@ static INPUT_PORTS_START( bigtwinb )
 	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )  PORT_DIPLOCATION("DSW2:3") // No nudes, No Censor dipswitch
 	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
+
+	PORT_MODIFY("P1")
+	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
+	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
+	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
+	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
+
+	PORT_MODIFY("P2")
+	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
+	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
+	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
+	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
 INPUT_PORTS_END
 
 static INPUT_PORTS_START( wbeachvl )