diff --git a/src/mame/drivers/tmnt.c b/src/mame/drivers/tmnt.c
index 4b2b79efa89..9027ffce4bc 100644
--- a/src/mame/drivers/tmnt.c
+++ b/src/mame/drivers/tmnt.c
@@ -1933,9 +1933,7 @@ static INPUT_PORTS_START( sunsetbl )
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SPECIAL )	/* EEPROM status? - always 1 */
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_SERVICE_NO_TOGGLE( 0x08, IP_ACTIVE_LOW )
-	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
-	PORT_BIT( 0x60, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* unused? */
-	PORT_SERVICE_NO_TOGGLE( 0x80, IP_ACTIVE_LOW )
+	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNKNOWN )    /* unused? */
 
 	PORT_START( "EEPROMOUT" )
 	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE("eeprom", eeprom_write_bit)
diff --git a/src/mame/drivers/yunsun16.c b/src/mame/drivers/yunsun16.c
index 26a755a3118..5a295c87465 100644
--- a/src/mame/drivers/yunsun16.c
+++ b/src/mame/drivers/yunsun16.c
@@ -410,22 +410,22 @@ static INPUT_PORTS_START( bombkick )
 	PORT_DIPSETTING(      0x0003, "3" )
 	PORT_DIPSETTING(      0x0002, "4" )
 	PORT_DIPSETTING(      0x0001, "5" )
-	PORT_DIPNAME( 0x0004, 0x0004, "DON'T CHANGE IT!" )      /* Must be OFF ! - read notes */
+	PORT_DIPNAME( 0x0004, 0x0004, "DSW 2:3 - LEAVE OFF!" )	/* Must be OFF ! - read notes */
 	PORT_DIPSETTING(      0x0004, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0008, 0x0008, "DON'T CHANGE IT!" )      /* Must be OFF ! - read notes */
+	PORT_DIPNAME( 0x0008, 0x0008, "DSW 2:4 - LEAVE OFF!" )	/* Must be OFF ! - read notes */
 	PORT_DIPSETTING(      0x0008, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0010, 0x0000, "DON'T CHANGE IT!" )      /* Must be ON  ! - read notes */
+	PORT_DIPNAME( 0x0010, 0x0000, "DSW 2:5 - LEAVE ON!" )	/* Must be ON  ! - read notes */
 	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0020, 0x0020, "DON'T CHANGE IT!" )      /* Must be OFF ! - read notes */
+	PORT_DIPNAME( 0x0020, 0x0020, "DSW 2:6 - LEAVE OFF!" )	/* Must be OFF ! - read notes */
 	PORT_DIPSETTING(      0x0020, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0040, 0x0000, "DON'T CHANGE IT!" )      /* Must be ON  ! - read notes */
+	PORT_DIPNAME( 0x0040, 0x0000, "DSW 2:7 - LEAVE ON!" )	/* Must be ON  ! - read notes */
 	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0080, 0x0080, "DON'T CHANGE IT!" )      /* Must be OFF ! - read notes */
+	PORT_DIPNAME( 0x0080, 0x0080, "DSW 2:8 - LEAVE OFF!" )	/* Must be OFF ! - read notes */
 	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
 INPUT_PORTS_END