diff --git a/Hcs.Broker/Api/Request/GostSigningMessageInspector.cs b/Hcs.Broker/Api/Request/GostSigningMessageInspector.cs
index e7efeac..670ac42 100644
--- a/Hcs.Broker/Api/Request/GostSigningMessageInspector.cs
+++ b/Hcs.Broker/Api/Request/GostSigningMessageInspector.cs
@@ -147,7 +147,7 @@ namespace Hcs.Broker.Api.Request
                 doc.RemoveChild(doc.FirstChild);
             }
 
-            return doc.ToString();
+            return doc.OuterXml;
         }
 
         private XmlReader XmlReaderFromString(string xml)