diff --git a/shadowsocks-csharp/Util/Sockets/WrappedSocket.cs b/shadowsocks-csharp/Util/Sockets/WrappedSocket.cs
index db4332af..353a6301 100644
--- a/shadowsocks-csharp/Util/Sockets/WrappedSocket.cs
+++ b/shadowsocks-csharp/Util/Sockets/WrappedSocket.cs
@@ -21,7 +21,7 @@ namespace Shadowsocks.Util.Sockets
         // Only used during connection and close, so it won't cost too much.
         private SpinLock _socketSyncLock = new SpinLock();
 
-        private volatile bool _disposed;
+        private bool _disposed;
         private bool Connected => _activeSocket != null;
         private Socket _activeSocket;