diff --git a/src/mame/drivers/neogeo.c b/src/mame/drivers/neogeo.c
index db1835cc1ef..47e2e734be9 100644
--- a/src/mame/drivers/neogeo.c
+++ b/src/mame/drivers/neogeo.c
@@ -1406,7 +1406,6 @@ static MACHINE_CONFIG_DERIVED( mvs, neogeo )
     MCFG_CARTSLOT_ADD("cart")
 	MCFG_CARTSLOT_LOAD(neo_cartridge)
 	MCFG_CARTSLOT_INTERFACE("neo_cart")
-	MCFG_CARTSLOT_MANDATORY
 
 	MCFG_SOFTWARE_LIST_ADD("cart_list","neogeo")
 MACHINE_CONFIG_END