diff --git a/cinderclient/client.py b/cinderclient/client.py
index 314c852..0467e43 100644
--- a/cinderclient/client.py
+++ b/cinderclient/client.py
@@ -231,8 +231,7 @@ class HTTPClient(object):
                     self.auth_token = self.auth_ref.auth_token
 
                 management_url = self.service_catalog.url_for(
-                    attr='region',
-                    filter_value=self.region_name,
+                    region_name=self.region_name,
                     endpoint_type=self.endpoint_type,
                     service_type=self.service_type)
                 self.management_url = management_url.rstrip('/')