diff --git a/src/mame/drivers/metro.c b/src/mame/drivers/metro.c
index 03fddae13ce..d91705c8fa8 100644
--- a/src/mame/drivers/metro.c
+++ b/src/mame/drivers/metro.c
@@ -2254,9 +2254,9 @@ static INPUT_PORTS_START( msgogo )
 	PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )      PORT_DIPLOCATION("SW2:4")
 	PORT_DIPSETTING(      0x0800, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) )      PORT_DIPLOCATION("SW2:5")
-	PORT_DIPSETTING(      0x1000, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x1000, 0x1000, "Allow P2 to Join Game" )     PORT_DIPLOCATION("SW2:5")
+	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x1000, DEF_STR( On ) )
 	PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Lives ) )        PORT_DIPLOCATION("SW2:6")
 	PORT_DIPSETTING(      0x2000, "2" )
 	PORT_DIPSETTING(      0x0000, "3" )