diff --git a/prometheus.py b/prometheus.py
index 007b4f6..d2ffcf5 100755
--- a/prometheus.py
+++ b/prometheus.py
@@ -92,7 +92,7 @@ class Prometheus():
                     online_ipversion.labels(host,node,k).set(v)
                 for client, data in self._metrics.get_online_client_by_ipversion(node=node,vhost=host).items():
                     for k, v in data.items():
-                        online_client_ipversion.labels(host,node,str(k),client).set(v)
+                        online_client_ipversion.labels(host,node,client,str(k)).set(v)
 
         return registry