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-rw-r--r--src/mame/drivers/hexion.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/hexion.cpp b/src/mame/drivers/hexion.cpp
index 7ae6580caea..dca86457b7e 100644
--- a/src/mame/drivers/hexion.cpp
+++ b/src/mame/drivers/hexion.cpp
@@ -289,7 +289,8 @@ MACHINE_CONFIG_START(hexion_state::hexion)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.5)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(hexion_state::hexionb, hexion)
+MACHINE_CONFIG_START(hexion_state::hexionb)
+ hexion(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(hexionb_map)