diff --git a/OpenAuth.WebApi/Model/mqtt/ThingRequestHandler.cs b/OpenAuth.WebApi/Model/mqtt/ThingRequestHandler.cs
index b33b30d..c6d0caf 100644
--- a/OpenAuth.WebApi/Model/mqtt/ThingRequestHandler.cs
+++ b/OpenAuth.WebApi/Model/mqtt/ThingRequestHandler.cs
@@ -179,7 +179,7 @@ namespace OpenAuth.WebApi.Model.mqtt
                         }
                     }
                 }
-                uavsn = uavsn == "" ? "1581F8HGX254V00A0BUY" : uavsn;
+                uavsn = uavsn == "" ? "0" : uavsn;
                 _manageApp.AddDronePort(lasaDronePort);
                 _manageApp.AddLasaUav(lasaUav);
                 var topics = new List<string>();