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-rw-r--r--src/mame/drivers/39in1.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/39in1.cpp b/src/mame/drivers/39in1.cpp
index d8ab13950e0..e6b04233d36 100644
--- a/src/mame/drivers/39in1.cpp
+++ b/src/mame/drivers/39in1.cpp
@@ -1600,7 +1600,8 @@ MACHINE_CONFIG_START(_39in1_state::_39in1)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(_39in1_state::_60in1, _39in1)
+MACHINE_CONFIG_START(_39in1_state::_60in1)
+ _39in1(config);
MCFG_MACHINE_START_OVERRIDE(_39in1_state,60in1)
MACHINE_CONFIG_END