diff --git a/ospfd/ospfd.c b/ospfd/ospfd.c
index 4062d64..019a22b 100644
--- a/ospfd/ospfd.c
+++ b/ospfd/ospfd.c
@@ -1557,6 +1557,8 @@
   p.prefixlen = IPV4_MAX_BITLEN;
 
   rn = route_node_get (ospf->nbr_nbma, (struct prefix *)&p);
+  if (rn->info)
+    route_unlock_node (rn);
   rn->info = nbr_nbma;
 
   for (ALL_LIST_ELEMENTS_RO (ospf->oiflist, node, oi))