diff --git a/shadowsocks-csharp/Controller/ShadowsocksController.cs b/shadowsocks-csharp/Controller/ShadowsocksController.cs
index 9b2b9ba3..2610bbab 100755
--- a/shadowsocks-csharp/Controller/ShadowsocksController.cs
+++ b/shadowsocks-csharp/Controller/ShadowsocksController.cs
@@ -132,11 +132,6 @@ namespace Shadowsocks.Controller
             {
                 polipoRunner.Stop();
             }
-            if (pacServer != null)
-            {
-                pacServer.Stop();
-                pacServer = null;
-            }
             if (_config.enabled)
             {
                 SystemProxy.Disable();
diff --git a/shadowsocks-csharp/Program.cs b/shadowsocks-csharp/Program.cs
index c3c0537a..716e0df7 100755
--- a/shadowsocks-csharp/Program.cs
+++ b/shadowsocks-csharp/Program.cs
@@ -45,8 +45,6 @@ namespace Shadowsocks
                 controller.Start();
 
                 Application.Run();
-
-                controller.Stop();
             }
         }
     }