diff --git a/proto/radv/config.Y b/proto/radv/config.Y
index 78a09551..495d9a05 100644
--- a/proto/radv/config.Y
+++ b/proto/radv/config.Y
@@ -31,7 +31,7 @@ CF_ADDTO(proto, radv_proto '}')
 
 radv_proto_start: proto_start RADV
 {
-  this_proto = proto_config_new(&proto_radv, sizeof(struct radv_config));
+  this_proto = proto_config_new(&proto_radv, sizeof(struct radv_config), $1);
   init_list(&RADV_CFG->patt_list);
   init_list(&RADV_CFG->pref_list);
 };
diff --git a/proto/radv/radv.c b/proto/radv/radv.c
index 42d4bff9..d6fc8da5 100644
--- a/proto/radv/radv.c
+++ b/proto/radv/radv.c
@@ -328,7 +328,7 @@ radv_copy_config(struct proto_config *dest, struct proto_config *src)
   init_list(&d->patt_list);
 
   /* We copy pref_list, shallow copy suffices */
-  cfg_copy_list(&d->iface_list, &s->iface_list, sizeof(struct iface_patt));
+  cfg_copy_list(&d->pref_list, &s->pref_list, sizeof(struct radv_prefix_config));
 }