diff --git a/lib/urb.js b/lib/urb.js
index 10a5aa1f4..9dc381226 100644
--- a/lib/urb.js
+++ b/lib/urb.js
@@ -189,9 +189,14 @@ window.urb.send = function(params,cb) {
 
   params.ship = params.ship || this.ship
   params.appl = params.appl || this.appl
-  params.mark = params.mark || "json"
   params.xyro = params.data || {}
+  params.mark = params.mark || "json"
   params.wire = params.wire || "/"
+  
+  if(typeof(params.data) === 'undefined')
+    params.xyro = null
+  else
+    params.xyro = params.data
 
 
   url = ["to",params.appl,params.mark]