diff --git a/src/gb/gprs_ns.c b/src/gb/gprs_ns.c
index b500d9a..ee2d7ec 100644
--- a/src/gb/gprs_ns.c
+++ b/src/gb/gprs_ns.c
@@ -1330,6 +1330,7 @@
 	nsi->unknown_nsvc = gprs_nsvc_create(nsi, 0xfffe);
 	nsi->unknown_nsvc->nsvci_is_valid = 0;
 	llist_del(&nsi->unknown_nsvc->list);
+	INIT_LLIST_HEAD(&nsi->unknown_nsvc->list);
 
 	return nsi;
 }
@@ -1338,6 +1339,8 @@
 {
 	struct gprs_nsvc *nsvc, *nsvc2;
 
+	gprs_nsvc_delete(nsi->unknown_nsvc);
+
 	/* delete all NSVCs and clear their timers */
 	llist_for_each_entry_safe(nsvc, nsvc2, &nsi->gprs_nsvcs, list)
 		gprs_nsvc_delete(nsvc);