diff --git a/sound/usb/usx2y/us144mkii.c b/sound/usb/usx2y/us144mkii.c
index 0cf4fa74e210..94553b61013c 100644
--- a/sound/usb/usx2y/us144mkii.c
+++ b/sound/usb/usx2y/us144mkii.c
@@ -420,7 +420,11 @@ static int tascam_probe(struct usb_interface *intf,
 
 	/* The device has two interfaces; we drive both from this driver. */
 	if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
-		tascam = usb_get_intfdata(usb_ifnum_to_if(dev, 0));
+		struct usb_interface *intf_zero = usb_ifnum_to_if(dev, 0);
+
+		if (!intf_zero)
+			return -ENODEV;
+		tascam = usb_get_intfdata(intf_zero);
 		if (tascam) {
 			usb_set_intfdata(intf, tascam);
 			tascam->iface1 = intf;