diff --git a/coolamqp/cluster.py b/coolamqp/cluster.py
index 7d2b7c1eabe858c9235b29277a148ae867f81cae..41086590f7ecefccb9e41dbf96cecdc7d0b1e2a0 100644
--- a/coolamqp/cluster.py
+++ b/coolamqp/cluster.py
@@ -19,7 +19,7 @@ class ClusterNode(object):
         Create a cluster node definition.
 
             a = ClusterNode(host='192.168.0.1', user='admin', password='password',
-                            vhost='vhost')
+                            virtual_host='vhost')
 
         or