diff --git a/sound/firewire/isight.c b/sound/firewire/isight.c
index 4e334919a70f..10a9b9b0b2c2 100644
--- a/sound/firewire/isight.c
+++ b/sound/firewire/isight.c
@@ -82,6 +82,7 @@ MODULE_LICENSE("GPL v2");
 static struct fw_iso_packet audio_packet = {
 	.payload_length = sizeof(struct audio_payload),
 	.interrupt = 1,
+	.header_length = 4,
 };
 
 static void isight_update_pointers(struct isight *isight, unsigned int count)