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-rw-r--r--src/mame/drivers/mice.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/mice.cpp b/src/mame/drivers/mice.cpp
index bfc9877e73e..d4cb1ba9ceb 100644
--- a/src/mame/drivers/mice.cpp
+++ b/src/mame/drivers/mice.cpp
@@ -184,7 +184,8 @@ MACHINE_CONFIG_START(mice_state::mice)
MCFG_DEVICE_ADD("ppi", I8255, 0)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(mice_state::mice2, mice)
+MACHINE_CONFIG_START(mice_state::mice2)
+ mice(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(mice2_mem)
MCFG_CPU_IO_MAP(mice2_io)