diff --git a/lg.py b/lg.py
index 42185c1..0408641 100644
--- a/lg.py
+++ b/lg.py
@@ -32,7 +32,7 @@ import random
 import re
 import subprocess
 
-from toolbox import mask_is_valid, ipv6_is_valid, ipv4_is_valid, resolve, save_cache_pickle, load_cache_pickle, get_asname_from_whois, unescape
+from toolbox import mask_is_valid, ipv6_is_valid, ipv4_is_valid, resolve, resolve_ptr, save_cache_pickle, load_cache_pickle, get_asname_from_whois, unescape
 
 from dns.resolver import NXDOMAIN
 from flask import Flask, render_template, jsonify, redirect, session, request, abort, Response, Markup
@@ -588,7 +588,11 @@ def build_as_tree_from_raw_bird_ouput(host, proto, text):
                 net_dest = expr2.group(1).strip()
 
         if line.startswith("BGP.as_path:"):
-            path.extend(line.replace("BGP.as_path:", "").strip().split(" "))
+            ASes = line.replace("BGP.as_path:", "").strip().split(" ")
+            if path:
+                path.extend(ASes)
+            else:
+                path = ASes
 
     if path:
         path.append(net_dest)