tracker/server.go | 1 +

diff --git a/tracker/server.go b/tracker/server.go
index 806cdcf0916243fb8cfca4887e0eab0cd7dc77e4..e19b816a4cff56c2fda37249b6d506c8d5a51bbe 100644
--- a/tracker/server.go
+++ b/tracker/server.go
@@ -186,6 +186,7 @@ 	curPeersChan := make(chan map[PeerInfo]struct{})
 	doneChan := make(chan struct{})
 	retPeers := make(map[PeerInfo]struct{})
 	go func() {
+		defer close(doneChan)
 		for {
 			select {
 			case peers, ok := <-peersChan: