diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index ff8399f60876..3badb10229ef 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1829,7 +1829,6 @@ static void gsm_queue(struct gsm_mux *gsm)
 		gsm_response(gsm, address, UA);
 		gsm_dlci_close(dlci);
 		break;
-	case UA:
 	case UA|PF:
 		if (cr == 0 || dlci == NULL)
 			break;