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-rw-r--r--src/mame/drivers/sidepckt.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/sidepckt.cpp b/src/mame/drivers/sidepckt.cpp
index d3e3d141288..f68975291cd 100644
--- a/src/mame/drivers/sidepckt.cpp
+++ b/src/mame/drivers/sidepckt.cpp
@@ -403,7 +403,8 @@ MACHINE_CONFIG_START(sidepckt_state::sidepckt)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(sidepckt_state::sidepcktb, sidepckt)
+MACHINE_CONFIG_START(sidepckt_state::sidepcktb)
+ sidepckt(config);
/* basic machine hardware */
MCFG_CPU_MODIFY("maincpu")