diff --git a/src/mame/drivers/galspnbl.c b/src/mame/drivers/galspnbl.c
index 94defb1829e..b46caf2b928 100644
--- a/src/mame/drivers/galspnbl.c
+++ b/src/mame/drivers/galspnbl.c
@@ -95,7 +95,7 @@ static INPUT_PORTS_START( galspnbl )
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
 	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME( "Left Flippers" )
-	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME( "Launch Ball / Tilt (Left Side)" )
+	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME( "Launch Ball / Shake (Left Side)" )
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )            /* uncalled (?) code at 0x007ed2 ('hotpinbl') or 0x008106 ('galspnbl') */
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
 
@@ -104,7 +104,7 @@ static INPUT_PORTS_START( galspnbl )
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
-	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME( "Launch Ball / Tilt (Right Side)" )
+	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME( "Launch Ball / Shake (Right Side)" )
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME( "Right Flippers" )
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )            /* uncalled (?) code at 0x007e90 ('hotpinbl') or 0x0080c4 ('galspnbl') */
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
diff --git a/src/mame/drivers/spbactn.c b/src/mame/drivers/spbactn.c
index 15f40d48821..169f1b89cd7 100644
--- a/src/mame/drivers/spbactn.c
+++ b/src/mame/drivers/spbactn.c
@@ -215,7 +215,7 @@ static INPUT_PORTS_START( spbactn )
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME( "Left Flippers" )
-	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME( "Launch Ball / Tilt (Left Side)" )
+	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME( "Launch Ball / Shake (Left Side)" )
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
 
@@ -224,7 +224,7 @@ static INPUT_PORTS_START( spbactn )
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
-	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME( "Launch Ball / Tilt (Right Side)" )
+	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME( "Launch Ball / Shake (Right Side)" )
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME( "Right Flippers" )
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
@@ -370,11 +370,11 @@ static MACHINE_CONFIG_START( spbactn, spbactn_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("ymsnd", YM3812, XTAL_4MHz) /* Was 3.579545MHz, a commom clock, but no way to generate via on PCB OSCs */
+	MCFG_SOUND_ADD("ymsnd", YM3812, XTAL_4MHz) /* Was 3.579545MHz, a common clock, but no way to generate via on PCB OSCs */
 	MCFG_SOUND_CONFIG(ym3812_config)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
 
-	MCFG_OKIM6295_ADD("oki", XTAL_4MHz/4, OKIM6295_PIN7_HIGH) /* Was 1.056MHz, a commom clock, but no way to generate via on PCB OSCs. clock frequency & pin 7 not verified */
+	MCFG_OKIM6295_ADD("oki", XTAL_4MHz/4, OKIM6295_PIN7_HIGH) /* Was 1.056MHz, a common clock, but no way to generate via on PCB OSCs. clock frequency & pin 7 not verified */
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
 MACHINE_CONFIG_END