diff --git a/shadowsocks-csharp/Controller/Local.cs b/shadowsocks-csharp/Controller/Local.cs
index 8eb2384b..4df401ce 100755
--- a/shadowsocks-csharp/Controller/Local.cs
+++ b/shadowsocks-csharp/Controller/Local.cs
@@ -70,6 +70,7 @@ namespace Shadowsocks.Controller
             {
                 Socket listener = (Socket)ar.AsyncState;
                 Socket conn = listener.EndAccept(ar);
+                conn.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.NoDelay, true);
 
                 listener.BeginAccept(
                     new AsyncCallback(AcceptCallback),
@@ -130,6 +131,7 @@ namespace Shadowsocks.Controller
 
                 remote = new Socket(ipAddress.AddressFamily,
                     SocketType.Stream, ProtocolType.Tcp);
+                remote.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.NoDelay, true);
 
                 // Connect to the remote endpoint.
                 remote.BeginConnect(remoteEP,
diff --git a/shadowsocks-csharp/Controller/UpdateChecker.cs b/shadowsocks-csharp/Controller/UpdateChecker.cs
index b731013d..046ae941 100755
--- a/shadowsocks-csharp/Controller/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/UpdateChecker.cs
@@ -121,7 +121,6 @@ namespace Shadowsocks.Controller
                     {
                         if (attr.Name == "url")
                         {
-                            Console.WriteLine(attr.Value);
                             if (IsNewVersion(attr.Value))
                             {
                                 versions.Add(attr.Value);