diff --git a/93_nei_core/Getf_Service_Transfer_Client_Service_HttpHandler/HttpService.cs b/93_nei_core/Getf_Service_Transfer_Client_Service_HttpHandler/HttpService.cs
index 04f0627..1b3303d 100644
--- a/93_nei_core/Getf_Service_Transfer_Client_Service_HttpHandler/HttpService.cs
+++ b/93_nei_core/Getf_Service_Transfer_Client_Service_HttpHandler/HttpService.cs
@@ -134,7 +134,7 @@ namespace Getf_Service_Transfer_Client_Service_HttpHandler
                     }
                     else if (item.Value is JObject)
                         url += $"&{item.Key}={Newtonsoft.Json.JsonConvert.SerializeObject(item.Value)}";
-                    else
+                    else if (item.Value != null && !string.IsNullOrWhiteSpace(item.Value.ToString()))
                         url += $"&{item.Key}={item.Value}";
                 }
             }