diff --git a/shadowsocks-csharp/Program.cs b/shadowsocks-csharp/Program.cs
index 716e0df7..c3c0537a 100755
--- a/shadowsocks-csharp/Program.cs
+++ b/shadowsocks-csharp/Program.cs
@@ -45,6 +45,8 @@ namespace Shadowsocks
                 controller.Start();
 
                 Application.Run();
+
+                controller.Stop();
             }
         }
     }