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-rw-r--r--src/mame/drivers/psikyo4.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/psikyo4.cpp b/src/mame/drivers/psikyo4.cpp
index 27b1ec05337..9f9e48a1887 100644
--- a/src/mame/drivers/psikyo4.cpp
+++ b/src/mame/drivers/psikyo4.cpp
@@ -695,7 +695,8 @@ MACHINE_CONFIG_START(psikyo4_state::ps4big)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(psikyo4_state::ps4small, ps4big)
+MACHINE_CONFIG_START(psikyo4_state::ps4small)
+ ps4big(config);
/* basic machine hardware */