diff --git a/bgpd/bgp_routemap.c b/bgpd/bgp_routemap.c
index ce9ceb5..261f6b8 100644
--- a/bgpd/bgp_routemap.c
+++ b/bgpd/bgp_routemap.c
@@ -1950,7 +1950,7 @@
 
 /* Hook function for updating route_map assignment. */
 void
-bgp_route_map_update ()
+bgp_route_map_update (char *unused)
 {
   int i;
   afi_t afi;