diff --git a/bgpd/bgp_aspath.h b/bgpd/bgp_aspath.h
index 5400c57..efec24c 100644
--- a/bgpd/bgp_aspath.h
+++ b/bgpd/bgp_aspath.h
@@ -79,7 +79,7 @@
 extern const char *aspath_print (struct aspath *);
 extern void aspath_print_vty (struct vty *, const char *, struct aspath *);
 extern void aspath_print_all_vty (struct vty *);
-extern unsigned int aspath_key_make (struct aspath *);
+extern unsigned int aspath_key_make (void *);
 extern int aspath_loop_check (struct aspath *, as_t);
 extern int aspath_private_as_check (struct aspath *);
 extern int aspath_firstas_check (struct aspath *, as_t);