diff --git a/sound/usb/card.c b/sound/usb/card.c
index 1b2edc0fd2e9..9dfb4e163201 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -619,7 +619,7 @@ static int snd_usb_audio_create(struct usb_interface *intf,
 	}
 
 	err = snd_card_new(&intf->dev, index[idx], id[idx], THIS_MODULE,
-			   sizeof(*chip), &card);
+			   sizeof(*chip) * 2, &card);
 	if (err < 0) {
 		dev_err(&dev->dev, "cannot create card instance %d\n", idx);
 		return err;