tracker/peer.go | 4 +++-

diff --git a/tracker/peer.go b/tracker/peer.go
index 44d61e82882845dc92017c6ce71ef2559ed876ec..6f13c569c2b664de487f5a1250ccb781cbf74ab7 100644
--- a/tracker/peer.go
+++ b/tracker/peer.go
@@ -15,7 +15,9 @@
 // Set from the non-compact form in BEP 3.
 func (p *Peer) fromDictInterface(d map[string]interface{}) {
 	p.IP = net.ParseIP(d["ip"].(string))
-	p.ID = []byte(d["peer id"].(string))
+	if _, ok := d["peer id"]; ok {
+		p.ID = []byte(d["peer id"].(string))
+	}
 	p.Port = int(d["port"].(int64))
 }