diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index a076c24a312a53faa30af12e362128ac70fee2eb..71d672ea12294a20ddea55b65645c1ca5de0ef17 100644
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -314,7 +314,7 @@ static int appledisplay_probe(struct usb_interface *iface,
 					pdata->urbdata, pdata->urb->transfer_dma);
 			usb_free_urb(pdata->urb);
 		}
-		if (pdata->bd)
+		if (pdata->bd && !IS_ERR(pdata->bd))
 			backlight_device_unregister(pdata->bd);
 		kfree(pdata->msgdata);
 	}