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-rw-r--r--src/mame/drivers/pitnrun.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/pitnrun.cpp b/src/mame/drivers/pitnrun.cpp
index 930fd94ee5d..49217973600 100644
--- a/src/mame/drivers/pitnrun.cpp
+++ b/src/mame/drivers/pitnrun.cpp
@@ -327,7 +327,8 @@ MACHINE_CONFIG_START(pitnrun_state::pitnrun)
MCFG_DEVICE_ADD("noiselatch", LS259, 0) // 1J
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(pitnrun_state::pitnrun_mcu, pitnrun)
+MACHINE_CONFIG_START(pitnrun_state::pitnrun_mcu)
+ pitnrun(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(pitnrun_map_mcu)