diff --git a/Netch/Controllers/Guard.cs b/Netch/Controllers/Guard.cs
index e599169b..71f23ac4 100644
--- a/Netch/Controllers/Guard.cs
+++ b/Netch/Controllers/Guard.cs
@@ -83,7 +83,7 @@ namespace Netch.Controllers
         ///     仅初始化 <see cref="Instance"/>,不设定事件处理方法
         /// </summary>
         /// <param name="argument"></param>
-        protected void InitInstance(string argument)
+        protected virtual void InitInstance(string argument)
         {
             Instance = new Process
             {
diff --git a/Netch/Controllers/IController.cs b/Netch/Controllers/IController.cs
index b829a199..2eb3b29b 100644
--- a/Netch/Controllers/IController.cs
+++ b/Netch/Controllers/IController.cs
@@ -10,6 +10,6 @@
         /// <summary>
         ///     停止
         /// </summary>
-        public abstract void Stop();
+        public void Stop();
     }
 }
\ No newline at end of file