diff --git a/ospfd/ospf_route.h b/ospfd/ospf_route.h
index 5742b46..6c202b0 100644
--- a/ospfd/ospf_route.h
+++ b/ospfd/ospf_route.h
@@ -159,7 +159,7 @@
 extern void ospf_prune_unreachable_routers (struct route_table *);
 extern int ospf_add_discard_route (struct route_table *, struct ospf_area *,
 				   struct prefix_ipv4 *);
-extern void ospf_delete_discard_route (struct prefix_ipv4 *);
+extern void ospf_delete_discard_route (struct route_table *, struct prefix_ipv4 *);
 extern int ospf_route_match_same (struct route_table *, struct prefix_ipv4 *,
 				  struct ospf_route *);