diff --git a/lib/api/metric.js b/lib/api/metric.js
index 71c9ec3..905dacf 100644
--- a/lib/api/metric.js
+++ b/lib/api/metric.js
@@ -99,7 +99,9 @@ function send_all(metrics, callback){
         }
     }
     var params = {
-        body: metrics
+        body: {
+            series: metrics
+        }
     };
     client.request("POST", "/series", params, callback);
 }