diff --git a/src/mame/drivers/ginganin.cpp b/src/mame/drivers/ginganin.cpp
index ba32b1284c5..ec5da8ce425 100644
--- a/src/mame/drivers/ginganin.cpp
+++ b/src/mame/drivers/ginganin.cpp
@@ -250,7 +250,7 @@ static MACHINE_CONFIG_START( ginganin )
 	MCFG_CPU_PROGRAM_MAP(ginganin_map)
 	MCFG_CPU_VBLANK_INT_DRIVER("screen", ginganin_state,  irq1_line_hold) /* ? (vectors 1-7 cointain the same address) */
 
-	MCFG_CPU_ADD("audiocpu", M6809, SOUND_CLOCK)
+	MCFG_CPU_ADD("audiocpu", MC6809, SOUND_CLOCK) // MBL68B09?
 	MCFG_CPU_PROGRAM_MAP(sound_map)