diff --git a/src/mame/drivers/trackfld.c b/src/mame/drivers/trackfld.c
index 1299f769344..9d74064ab8d 100644
--- a/src/mame/drivers/trackfld.c
+++ b/src/mame/drivers/trackfld.c
@@ -1004,7 +1004,7 @@ static MACHINE_CONFIG_START( yieartf, trackfld_state )
 	MCFG_SOUND_ADD("dac", DAC, 0)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
 
-	MCFG_SOUND_ADD("snsnd", SN76496, SOUND_CLOCK/8)
+	MCFG_SOUND_ADD("snsnd", SN76496, MASTER_CLOCK/6/2)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
 
 	MCFG_SOUND_ADD("vlm", VLM5030, VLM_CLOCK)