client.go | 6 +++++-

diff --git a/client.go b/client.go
index 4815a0cd4561edb27f18d1d147d4a07e0d3b58da..fe1a876970d9c334aa3bd2374f7745b6202e48a5 100644
--- a/client.go
+++ b/client.go
@@ -537,7 +537,11 @@ 		tc.SetLinger(0)
 	}
 	c := cl.newConnection(nc, false, nc.RemoteAddr(), nc.RemoteAddr().Network(),
 		regularNetConnPeerConnConnString(nc))
-	defer c.close()
+	defer func() {
+		cl.lock()
+		defer cl.unlock()
+		c.close()
+	}()
 	c.Discovery = PeerSourceIncoming
 	cl.runReceivedConn(c)
 }