diff --git a/Netch/Controllers/MainController.cs b/Netch/Controllers/MainController.cs
index 2fbd73a8..0338c7ae 100644
--- a/Netch/Controllers/MainController.cs
+++ b/Netch/Controllers/MainController.cs
@@ -151,32 +151,33 @@ namespace Netch.Controllers
         private static async Task<bool> StartMode(Server server, Mode mode)
         {
             ModeController = ModeHelper.GetModeControllerByType(mode.Type, out var port, out var portName, out var portType);
+
+            if (ModeController == null)
+            {
+                return true;
+            }
+
             if (port != null)
             {
                 PortCheckAndShowMessageBox((ushort) port, portName, portType);
                 UsingPorts.Add((ushort) port);
             }
 
-            if (ModeController != null)
+            Global.MainForm.StatusText(i18N.TranslateFormat("Starting {0}", ModeController.Name));
+            if (await Task.Run(() => ModeController.Start(mode)))
             {
-                Global.MainForm.StatusText(i18N.TranslateFormat("Starting {0}", ModeController.Name));
-                if (await Task.Run(() => ModeController.Start(mode)))
+                if (ModeController is Guard guard)
                 {
-                    if (ModeController is Guard guard)
+                    if (guard.Instance != null)
                     {
-                        if (guard.Instance != null)
-                        {
-                            ChildProcessTracker.AddProcess(guard.Instance);
-                        }
+                        ChildProcessTracker.AddProcess(guard.Instance);
                     }
-
-                    return true;
                 }
 
-                return false;
+                return true;
             }
 
-            return true;
+            return false;
         }
 
         /// <summary>
diff --git a/Netch/Utils/Bandwidth.cs b/Netch/Utils/Bandwidth.cs
index c6f5f2be..e06c8e69 100644
--- a/Netch/Utils/Bandwidth.cs
+++ b/Netch/Utils/Bandwidth.cs
@@ -8,6 +8,7 @@ using Microsoft.Diagnostics.Tracing.Session;
 using Netch.Controllers;
 using Netch.Models;
 using Netch.Servers.Shadowsocks;
+using Netch.Servers.Socks5;
 
 namespace Netch.Utils
 {
@@ -63,26 +64,28 @@ namespace Netch.Utils
 
             //var processList = Process.GetProcessesByName(ProcessName).Select(p => p.Id).ToHashSet();
             var instances = new List<Process>();
-            if (server.Type.Equals("Socks5") && MainController.ModeController.Name == "HTTP")
+            switch (MainController.ServerController)
             {
-                instances.Add(((HTTPController) MainController.ModeController).pPrivoxyController.Instance);
-            }
-            else if (MainController.ServerController != null)
-            {
-                switch (MainController.ServerController)
-                {
-                    case SSController ssController when ssController.DllFlag:
-                        instances.Add(Process.GetCurrentProcess());
-                        break;
-                    case Guard instanceController:
+                case null:
+                    break;
+                case SSController ssController when ssController.DllFlag:
+                    instances.Add(Process.GetCurrentProcess());
+                    break;
+                case Guard instanceController:
+                    if (instanceController.Instance != null)
                         instances.Add(instanceController.Instance);
-                        break;
-                }
+                    break;
             }
-            else if (MainController.ModeController != null)
+
+            if (!instances.Any())
             {
                 switch (MainController.ModeController)
                 {
+                    case null:
+                        break;
+                    case HTTPController httpController:
+                        instances.Add(httpController.pPrivoxyController.Instance);
+                        break;
                     case NFController _:
                         instances.Add(Process.GetCurrentProcess());
                         break;