diff --git a/src/mame/drivers/namcond1.c b/src/mame/drivers/namcond1.c
index 01149239863..61d971a3d37 100644
--- a/src/mame/drivers/namcond1.c
+++ b/src/mame/drivers/namcond1.c
@@ -324,7 +324,7 @@ static MACHINE_CONFIG_START( namcond1, namcond1_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
 
-	MCFG_C352_ADD("c352", XTAL_49_152MHz/3)
+	MCFG_C352_ADD("c352", XTAL_49_152MHz/2)
 	MCFG_SOUND_ROUTE(0, "rspeaker", 1.00)
 	MCFG_SOUND_ROUTE(1, "lspeaker", 1.00)
 	MCFG_SOUND_ROUTE(2, "rspeaker", 1.00)