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Diffstat (limited to 'src/mame/drivers/blueprnt.cpp')
-rw-r--r--src/mame/drivers/blueprnt.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/blueprnt.cpp b/src/mame/drivers/blueprnt.cpp
index 3d42d32070b..03012879afb 100644
--- a/src/mame/drivers/blueprnt.cpp
+++ b/src/mame/drivers/blueprnt.cpp
@@ -389,7 +389,8 @@ MACHINE_CONFIG_START(blueprnt_state::blueprnt)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(blueprnt_state::grasspin, blueprnt)
+MACHINE_CONFIG_START(blueprnt_state::grasspin)
+ blueprnt(config);
/* basic machine hardware */
MCFG_CPU_MODIFY("maincpu")