diff --git a/src/mame/drivers/namcona1.c b/src/mame/drivers/namcona1.c
index 9e82cd1d971..5fdc2f63da2 100644
--- a/src/mame/drivers/namcona1.c
+++ b/src/mame/drivers/namcona1.c
@@ -1312,7 +1312,7 @@ static MACHINE_DRIVER_START( namcona1 )
 	/* sound hardware */
 	MDRV_SPEAKER_STANDARD_STEREO("left", "right")
 
-	MDRV_SOUND_ADD(C140, 42667)
+	MDRV_SOUND_ADD(C140, 44100)
 	MDRV_SOUND_CONFIG(C140_interface_typeA)
 	MDRV_SOUND_ROUTE(0, "right", 1.00)
 	MDRV_SOUND_ROUTE(1, "left", 1.00)