t.go | 2 ++

diff --git a/t.go b/t.go
index f517ab680533f5df774e59a1cde00123daea7bab..a808cbf47d29d505cf1f8eb0eab0abdf0b6a46a6 100644
--- a/t.go
+++ b/t.go
@@ -254,6 +254,8 @@ 	return t.piece(i)
 }
 
 func (t *Torrent) PeerConns() []*PeerConn {
+	t.cl.rLock()
+	defer t.cl.rUnlock()
 	ret := make([]*PeerConn, 0, len(t.conns))
 	for c := range t.conns {
 		ret = append(ret, c)