diff --git a/EnvelopeGenerator.Web/Controllers/EnvelopeController.cs b/EnvelopeGenerator.Web/Controllers/EnvelopeController.cs
index 33cb11f4..1b8d59f1 100644
--- a/EnvelopeGenerator.Web/Controllers/EnvelopeController.cs
+++ b/EnvelopeGenerator.Web/Controllers/EnvelopeController.cs
@@ -72,7 +72,7 @@ namespace EnvelopeGenerator.Web.Controllers
 
                 var signResult = actionService?.SignEnvelope(response.Envelope, response.Receiver);
 
-                return Ok();
+                return Ok(new object());
             }
             catch (Exception e)
             {