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-rw-r--r--src/mame/drivers/joctronic.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/joctronic.cpp b/src/mame/drivers/joctronic.cpp
index 8f35c410a4c..ff4d699d4be 100644
--- a/src/mame/drivers/joctronic.cpp
+++ b/src/mame/drivers/joctronic.cpp
@@ -422,7 +422,8 @@ MACHINE_CONFIG_START(joctronic_state::slalom03)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(joctronic_state::bldyrolr, slalom03)
+MACHINE_CONFIG_START(joctronic_state::bldyrolr)
+ slalom03(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(bldyrolr_maincpu_map)
MACHINE_CONFIG_END