diff --git a/src/mame/drivers/changela.c b/src/mame/drivers/changela.c
index 1911ba6e857..8609b061d92 100644
--- a/src/mame/drivers/changela.c
+++ b/src/mame/drivers/changela.c
@@ -363,8 +363,8 @@ static INPUT_PORTS_START( changela )
 
 	PORT_START("IN0") /* 0xDx2C */
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Gear Shift") PORT_CODE(KEYCODE_SPACE) PORT_TOGGLE /* Gear shift */
-	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
-	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
+	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_CONDITION("DSWA", 0x20, EQUALS, 0x20)
+	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1) PORT_CONDITION("DSWA", 0x20, EQUALS, 0x20)
 	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN ) /* FWD - negated bit 7 */
 	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN ) /* REV - gear position */
 
@@ -376,7 +376,7 @@ static INPUT_PORTS_START( changela )
 	//PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON2 ) //gas2
 
 	PORT_START("WHEEL") /* 0xDx30 DRIVING_WHEEL */
-	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_MINMAX(0x00, 0xff) PORT_SENSITIVITY(50) PORT_KEYDELTA(8)
+	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_MINMAX(0x00, 0xff) PORT_SENSITIVITY(50) PORT_KEYDELTA(8) PORT_CONDITION("DSWA", 0x20, EQUALS, 0x00)
 INPUT_PORTS_END