diff --git a/SMBLibrary/Authentication/AuthenticateMessage/NTLMv2ClientChallenge.cs b/SMBLibrary/Authentication/AuthenticateMessage/NTLMv2ClientChallenge.cs
index 8f4daa2..5092e52 100644
--- a/SMBLibrary/Authentication/AuthenticateMessage/NTLMv2ClientChallenge.cs
+++ b/SMBLibrary/Authentication/AuthenticateMessage/NTLMv2ClientChallenge.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 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,
@@ -20,8 +20,10 @@ namespace SMBLibrary.Authentication
 
         public byte ResponseVersion;
         public byte ResponseVersionHigh;
+        // 6 zero bytes
         public DateTime Time;
-        public byte[] ClientChallenge;
+        // 4 zero bytes
+        public byte[] ClientChallenge; // 8-byte challenge message generated by the client
         public KeyValuePairList<AVPairKey, byte[]> AVPairs;
 
         public NTLMv2ClientChallengeStructure()