torrent.go | 6 +++++-

diff --git a/torrent.go b/torrent.go
index 4c5fd153b7aa441379b09de7488b6a01168cf328..d6846dbef762ec5670f630fced1cedaa0f0d28d3 100644
--- a/torrent.go
+++ b/torrent.go
@@ -207,7 +207,11 @@ 	if _, ok := t.halfOpen[addr]; ok {
 		return true
 	}
 	for c := range t.conns {
-		if c.remoteAddr().String() == addr {
+		ra := c.remoteAddr()
+		if ra == nil {
+			continue
+		}
+		if ra.String() == addr {
 			return true
 		}
 	}