diff --git a/libp2p/kademlia/kad_peerinfo.py b/libp2p/kademlia/kad_peerinfo.py
index 0333fad..fb40e3b 100644
--- a/libp2p/kademlia/kad_peerinfo.py
+++ b/libp2p/kademlia/kad_peerinfo.py
@@ -16,7 +16,7 @@ class KadPeerInfo(PeerInfo):
         super(KadPeerInfo, self).__init__(peer_id, peer_data)
 
         self.peer_id = peer_id.get_raw_id()
-        self.long_id = int(digest(peer_id._id_str).hex(), 16)
+        self.long_id = int(digest(peer_id.get_raw_id()).hex(), 16)
 
         self.addrs = peer_data.get_addrs() if peer_data else None