diff --git a/Hcs.Client/Client/Api/Request/GostSigningMessageInspector.cs b/Hcs.Client/Client/Api/Request/GostSigningMessageInspector.cs
index 7b30b76..0702245 100644
--- a/Hcs.Client/Client/Api/Request/GostSigningMessageInspector.cs
+++ b/Hcs.Client/Client/Api/Request/GostSigningMessageInspector.cs
@@ -20,7 +20,7 @@ namespace Hcs.Client.Api.Request
         {
             try
             {
-                var filterHeader = "[Message Inspector] ";
+                var filterHeader = "[Message Inspector]";
 
                 PurgeDebuggerHeaders(ref request);