diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 41f06447..dc747707 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -315,7 +315,7 @@ bgp_path_prepend(struct linpool *pool, eattr *a, ea_list *old, int as)
   e->attrs[0].id = EA_CODE(EAP_BGP, BA_AS_PATH);
   e->attrs[0].flags = BAF_TRANSITIVE;
   e->attrs[0].type = EAF_TYPE_AS_PATH;
-  e->attrs[0].u.ptr = path_prepend(pool, olda, as);
+  e->attrs[0].u.ptr = as_path_prepend(pool, olda, as);
   return e;
 }
 
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index 965196bb..d0d2523f 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -96,7 +96,7 @@ int bgp_get_attr(struct eattr *e, byte *buf);
 int bgp_rte_better(struct rte *, struct rte *);
 void bgp_rt_notify(struct proto *, struct network *, struct rte *, struct rte *, struct ea_list *);
 int bgp_import_control(struct proto *, struct rte **, struct ea_list **, struct linpool *);
-struct ea_list *bgp_path_prepend(struct linpool *pool, struct eattr *a, struct ea_list *old, int as);
+struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, int as);
 void bgp_attr_init(struct bgp_proto *);
 
 /* packets.c */