diff --git a/SMBLibrary/SMB1/Enums/TreeConnect/OptionalSupportFlags.cs b/SMBLibrary/SMB1/Enums/TreeConnect/OptionalSupportFlags.cs
index c54f216..1b127ae 100644
--- a/SMBLibrary/SMB1/Enums/TreeConnect/OptionalSupportFlags.cs
+++ b/SMBLibrary/SMB1/Enums/TreeConnect/OptionalSupportFlags.cs
@@ -8,6 +8,15 @@ namespace SMBLibrary.SMB1
         /// <summary>
         /// The server supports the use of SMB_FILE_ATTRIBUTES exclusive search attributes in client requests.
         /// </summary>
-        SMB_SUPPORT_SEARCH_BITS = 0x01,
+        SMB_SUPPORT_SEARCH_BITS = 0x0001,
+        SMB_SHARE_IS_IN_DFS = 0x0002,
+
+        SMB_CSC_CACHE_MANUAL_REINT = 0x0000, // SMB_CSC_MASK = 0
+        SMB_CSC_CACHE_AUTO_REINT = 0x0004,   // SMB_CSC_MASK = 1
+        SMB_CSC_CACHE_VDO = 0x0008,          // SMB_CSC_MASK = 2
+        SMB_CSC_NO_CACHING = 0x000C,         // SMB_CSC_MASK = 3
+
+        SMB_UNIQUE_FILE_NAME = 0x0010,
+        SMB_EXTENDED_SIGNATURES = 0x0020,
     }
 }