diff --git a/src/mame/drivers/segaorun.c b/src/mame/drivers/segaorun.c
index e086b8c0b6e..999c98f5cf0 100644
--- a/src/mame/drivers/segaorun.c
+++ b/src/mame/drivers/segaorun.c
@@ -857,7 +857,7 @@ static INPUT_PORTS_START( outrun_generic )
 	PORT_SERVICE_NO_TOGGLE( 0x02, IP_ACTIVE_LOW )
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE1 )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
-	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Gear Shift") PORT_CODE(KEYCODE_SPACE)
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Gear Shift") PORT_CODE(KEYCODE_SPACE) PORT_TOGGLE
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )
diff --git a/src/mame/drivers/turbo.c b/src/mame/drivers/turbo.c
index 6e61b8078e8..3149448022f 100644
--- a/src/mame/drivers/turbo.c
+++ b/src/mame/drivers/turbo.c
@@ -830,7 +830,7 @@ static INPUT_PORTS_START( turbo )
 	PORT_START("INPUT")	/* IN0 */
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 )				/* ACCEL B */
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )				/* ACCEL A */
-	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 )				/* SHIFT */
+	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_TOGGLE	/* SHIFT */
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
 	PORT_SERVICE_NO_TOGGLE( 0x10, IP_ACTIVE_LOW )
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
diff --git a/src/mame/drivers/tx1.c b/src/mame/drivers/tx1.c
index 48a10525edd..f83f8b3dadb 100644
--- a/src/mame/drivers/tx1.c
+++ b/src/mame/drivers/tx1.c
@@ -282,7 +282,7 @@ static INPUT_PORTS_START( buggyboy )
 	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
 	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
 	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN3 )
-	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Gear Change") PORT_CODE(KEYCODE_SPACE)
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Gear Change") PORT_CODE(KEYCODE_SPACE) PORT_TOGGLE
 	PORT_SERVICE( 0x80, IP_ACTIVE_HIGH )
 
 	PORT_START("PPI_PORTC")