diff --git a/include/main.nut b/include/main.nut
index ddfd714..6e904db 100644
--- a/include/main.nut
+++ b/include/main.nut
@@ -46,9 +46,10 @@ class PyG2O
     function _send(type, data, uuid = "none")
     {
         local sendData = {
-            "uuid": uuid,
             "data": data
         }
+        if (uuid != "none")
+            sendData["uuid"] <- uuid;
 
         _connection.send(JSON.dump_ansi(sendData, 2));
     }