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-rw-r--r--src/mame/drivers/airraid.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/airraid.cpp b/src/mame/drivers/airraid.cpp
index 0092c7e31bb..fce34580848 100644
--- a/src/mame/drivers/airraid.cpp
+++ b/src/mame/drivers/airraid.cpp
@@ -417,7 +417,8 @@ MACHINE_CONFIG_START(airraid_state::airraid)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(airraid_state::airraid_crypt, airraid)
+MACHINE_CONFIG_START(airraid_state::airraid_crypt)
+ airraid(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_OPCODES_MAP(decrypted_opcodes_map)
MACHINE_CONFIG_END