torrent.go | 3 +++

diff --git a/torrent.go b/torrent.go
index 99b71ae4f3d585cbd8033a7a7833dad4a7a145f2..9b3ff31e82aea1cdf01770b617045998d39aabfd 100644
--- a/torrent.go
+++ b/torrent.go
@@ -249,6 +249,9 @@
 func (t *Torrent) addPeer(p Peer) {
 	cl := t.cl
 	peersAddedBySource.Add(string(p.Source), 1)
+	if t.closed.IsSet() {
+		return
+	}
 	if cl.badPeerIPPort(p.IP, p.Port) {
 		torrent.Add("peers not added because of bad addr", 1)
 		return