client.go | 4 +++-

diff --git a/client.go b/client.go
index 349914d5923bef26d6fe9d386061b7d08d272536..7ab5ca6ab8e6141acc479912a56aa11ca7df967f 100644
--- a/client.go
+++ b/client.go
@@ -225,7 +225,9 @@ 	for {
 		conn, err := cl.Listener.Accept()
 		select {
 		case <-cl.quit:
-			conn.Close()
+			if conn != nil {
+				conn.Close()
+			}
 			return
 		default:
 		}