diff --git a/sound/pci/lx6464es/lx6464es.c b/sound/pci/lx6464es/lx6464es.c
index 0ac078d1b27a..7f6b1c6c2afe 100644
--- a/sound/pci/lx6464es/lx6464es.c
+++ b/sound/pci/lx6464es/lx6464es.c
@@ -1002,6 +1002,7 @@ static int snd_lx6464es_create(struct snd_card *card,
 		goto request_irq_failed;
 	}
 	chip->irq = pci->irq;
+	card->sync_irq = chip->irq;
 
 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 	if (err < 0)