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-rw-r--r--src/devices/bus/megadrive/sk.cpp9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/devices/bus/megadrive/sk.cpp b/src/devices/bus/megadrive/sk.cpp
index b48163e9b94..c45574ff1a3 100644
--- a/src/devices/bus/megadrive/sk.cpp
+++ b/src/devices/bus/megadrive/sk.cpp
@@ -79,7 +79,8 @@ static void sk_sub_cart(device_slot_interface &device)
// device_add_mconfig - add device configuration
//-------------------------------------------------
-MACHINE_CONFIG_START(md_rom_sk_device::device_add_mconfig)
- MCFG_MD_CARTRIDGE_ADD("subslot", sk_sub_cart, nullptr)
- MCFG_MD_CARTRIDGE_NOT_MANDATORY
-MACHINE_CONFIG_END
+void md_rom_sk_device::device_add_mconfig(machine_config &config)
+{
+ MD_CART_SLOT(config, m_exp, sk_sub_cart, nullptr);
+ m_exp->set_must_be_loaded(false);
+}