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-rw-r--r--src/mame/drivers/airbustr.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/airbustr.cpp b/src/mame/drivers/airbustr.cpp
index b51e771cbb6..0cf04754f2f 100644
--- a/src/mame/drivers/airbustr.cpp
+++ b/src/mame/drivers/airbustr.cpp
@@ -605,7 +605,8 @@ MACHINE_CONFIG_START(airbustr_state::airbustr)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(airbustr_state::airbustrb, airbustr)
+MACHINE_CONFIG_START(airbustr_state::airbustrb)
+ airbustr(config);
MCFG_WATCHDOG_MODIFY("watchdog")
MCFG_WATCHDOG_TIME_INIT(attotime::from_seconds(0)) // no protection device or watchdog
MACHINE_CONFIG_END