diff --git a/SMBLibrary/SMBLibrary.csproj b/SMBLibrary/SMBLibrary.csproj
index 31f6dd7..d838f55 100644
--- a/SMBLibrary/SMBLibrary.csproj
+++ b/SMBLibrary/SMBLibrary.csproj
@@ -271,6 +271,7 @@
     <Compile Include="Server\SMBServer.SMB1.cs" />
     <Compile Include="Server\SMBServer.SMB2.cs" />
     <Compile Include="Services\Enums\PlatformName.cs" />
+    <Compile Include="Services\Exceptions\UnsupportedOpNumException.cs" />
     <Compile Include="Services\RemoteService.cs" />
     <Compile Include="Services\RemoteServiceHelper.cs" />
     <Compile Include="Services\RPCPipeStream.cs" />
diff --git a/SMBLibrary/Services/Exceptions/UnsupportedOpNumException.cs b/SMBLibrary/Services/Exceptions/UnsupportedOpNumException.cs
new file mode 100644
index 0000000..3586d6a
--- /dev/null
+++ b/SMBLibrary/Services/Exceptions/UnsupportedOpNumException.cs
@@ -0,0 +1,18 @@
+/* Copyright (C) 2018 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+ * 
+ * You can redistribute this program and/or modify it under the terms of
+ * the GNU Lesser Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ */
+using System;
+using System.Collections.Generic;
+
+namespace SMBLibrary
+{
+    public class UnsupportedOpNumException : Exception
+    {
+        public UnsupportedOpNumException() : base()
+        {
+        }
+    }
+}