diff --git a/src/mame/drivers/kaneko16.c b/src/mame/drivers/kaneko16.c
index 13f0b1da660..60b6eb82bd0 100644
--- a/src/mame/drivers/kaneko16.c
+++ b/src/mame/drivers/kaneko16.c
@@ -1290,8 +1290,10 @@ static INPUT_PORTS_START( gtmr )
 	PORT_DIPSETTING(      0x0800, DEF_STR( Joystick ) )
 	PORT_DIPSETTING(      0x0000, "Wheel" )
 	PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Controls ) ) PORT_DIPLOCATION("SW1:5")
-	PORT_DIPSETTING(      0x1000, "1P Side" )    /* 360 degree wheel if SW1:4 set to wheel */
-	PORT_DIPSETTING(      0x0000, "Both Sides" ) /* 270 degree wheel if SW1:4 set to wheel */
+	PORT_DIPSETTING(      0x1000, "1P Side" )			PORT_CONDITION("DSW1",0x0800,PORTCOND_NOTEQUALS,0x00)
+	PORT_DIPSETTING(      0x0000, "Both Sides" )		PORT_CONDITION("DSW1",0x0800,PORTCOND_NOTEQUALS,0x00)
+	PORT_DIPSETTING(      0x1000, "360 degree wheel" )	PORT_CONDITION("DSW1",0x0800,PORTCOND_EQUALS,0x00)
+	PORT_DIPSETTING(      0x0000, "270 degree wheel" )	PORT_CONDITION("DSW1",0x0800,PORTCOND_EQUALS,0x00)
 	PORT_DIPNAME( 0x2000, 0x2000, "Use Brake" ) PORT_DIPLOCATION("SW1:6") /* Valid only when joystick is used */
 	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x2000, DEF_STR( On ) )