diff --git a/ospfd/ospf_asbr.c b/ospfd/ospf_asbr.c
index 8bef175..122e70b 100644
--- a/ospfd/ospf_asbr.c
+++ b/ospfd/ospf_asbr.c
@@ -135,7 +135,7 @@
 /* Add an External info for AS-external-LSA. */
 struct external_info *
 ospf_external_info_add (u_char type, struct prefix_ipv4 p,
-			unsigned int ifindex, struct in_addr nexthop)
+			ifindex_t ifindex, struct in_addr nexthop)
 {
   struct external_info *new;
   struct route_node *rn;