diff --git a/sop-sdk/sdk-csharp/SDKCSharp/Request/BaseRequest.cs b/sop-sdk/sdk-csharp/SDKCSharp/Request/BaseRequest.cs
index e6ce1a82..7ee96d06 100644
--- a/sop-sdk/sdk-csharp/SDKCSharp/Request/BaseRequest.cs
+++ b/sop-sdk/sdk-csharp/SDKCSharp/Request/BaseRequest.cs
@@ -39,7 +39,7 @@ namespace SDKCSharp.Request
         /// <returns></returns>
         public virtual string GetVersion()
         {
-            return null;
+            return version;
         }
 
         /// <summary>