diff --git a/ripngd/ripngd.h b/ripngd/ripngd.h
index 6cbbd84..75b542e 100644
--- a/ripngd/ripngd.h
+++ b/ripngd/ripngd.h
@@ -176,7 +176,7 @@
   struct in6_addr from;
 
   /* Which interface does this route come from. */
-  unsigned int ifindex;		
+  ifindex_t ifindex;		
 
   /* Metric of this route.  */
   u_char metric;		
@@ -384,9 +384,9 @@
 extern void ripng_event (enum ripng_event, int);
 extern int ripng_request (struct interface *ifp);
 extern void ripng_redistribute_add (int, int, struct prefix_ipv6 *,
-                                    unsigned int, struct in6_addr *);
+                                    ifindex_t, struct in6_addr *);
 extern void ripng_redistribute_delete (int, int, struct prefix_ipv6 *,
-                                       unsigned int);
+                                       ifindex_t);
 extern void ripng_redistribute_withdraw (int type);
 
 extern void ripng_distribute_update_interface (struct interface *);