diff --git a/src/mame/drivers/igs_m027.c b/src/mame/drivers/igs_m027.c
index 31262b5f228..55a4afd5763 100644
--- a/src/mame/drivers/igs_m027.c
+++ b/src/mame/drivers/igs_m027.c
@@ -67,6 +67,7 @@ public:
 	TILE_GET_INFO_MEMBER(get_bg_tilemap_tile_info);
 	virtual void video_start();
 	UINT32 screen_update_igs_majhong(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+	UINT32 screen_update_fearless(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
 	INTERRUPT_GEN_MEMBER(igs_majhong_interrupt);
 };
 
@@ -207,6 +208,11 @@ UINT32 igs_m027_state::screen_update_igs_majhong(screen_device &screen, bitmap_i
 	return 0;
 }
 
+UINT32 igs_m027_state::screen_update_fearless(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+	return 0;
+}
+
 /***************************************************************************
 
     Blitter
@@ -414,7 +420,7 @@ static MACHINE_CONFIG_START( fearless, igs_m027_state )
 	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
 	MCFG_SCREEN_SIZE(512, 256)
 	MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1)
-	MCFG_SCREEN_UPDATE_DRIVER(igs_m027_state, screen_update_igs_majhong)
+	MCFG_SCREEN_UPDATE_DRIVER(igs_m027_state, screen_update_fearless)
 
 	MCFG_PALETTE_LENGTH(0x200)
 
diff --git a/src/mame/drivers/vastar.c b/src/mame/drivers/vastar.c
index 3293cab3503..900d22df1a4 100644
--- a/src/mame/drivers/vastar.c
+++ b/src/mame/drivers/vastar.c
@@ -288,7 +288,7 @@ static INPUT_PORTS_START( pprobe )
 	PORT_DIPSETTING(    0x02, "2" )
 	PORT_DIPSETTING(    0x01, "3" )
 	PORT_DIPSETTING(    0x00, "4" )
-	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )		PORT_DIPLOCATION("DSW1:3") // unused?
+	PORT_DIPNAME( 0x04, 0x04, "Player Controls Demo (Cheat)" )		PORT_DIPLOCATION("DSW1:3")
 	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x08, 0x08, "Invulnerability (Cheat)" )	PORT_DIPLOCATION("DSW1:4")