diff --git a/src/mess/drivers/applix.c b/src/mess/drivers/applix.c
index ffbb0e809ee..9a0e5bf696b 100644
--- a/src/mess/drivers/applix.c
+++ b/src/mess/drivers/applix.c
@@ -707,7 +707,7 @@ static INPUT_PORTS_START( applix )
 	PORT_DIPNAME( 0x40, 0x00, "Switch 2") PORT_DIPLOCATION("SW2:3")
 	PORT_DIPSETTING(    0x40, DEF_STR(Off))
 	PORT_DIPSETTING(    0x00, DEF_STR(On))
-	PORT_DIPNAME( 0x80, 0x00, "Switch 3") PORT_DIPLOCATION("SW2:4")
+	PORT_DIPNAME( 0x80, 0x80, "Switch 3") PORT_DIPLOCATION("SW2:4")
 	PORT_DIPSETTING(    0x80, DEF_STR(Off))
 	PORT_DIPSETTING(    0x00, DEF_STR(On))