diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 8945491..e44f8e9 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -848,7 +848,7 @@
 {
 	int ret;
 
-	if ((ret = tty_register_ldisc(N_6PACK, NULL)))
+	if ((ret = tty_unregister_ldisc(N_6PACK)))
 		printk(msg_unregfail, ret);
 }