diff --git a/storm/openstack.py b/storm/openstack.py
index ff68fce..97c5b7d 100644
--- a/storm/openstack.py
+++ b/storm/openstack.py
@@ -1,6 +1,7 @@
 from storm.services.nova.json.images_client import ImagesClient
 from storm.services.nova.json.flavors_client import FlavorsClient
 from storm.services.nova.json.servers_client import ServersClient
+from storm.common.utils import data_utils
 import storm.config
 
 
@@ -12,27 +13,32 @@
         """
 
         self.config = storm.config.StormConfig()
+        self.auth_url = data_utils.build_url(self.config.nova.host,
+                                        self.config.nova.port,
+                                        self.config.nova.apiVer,
+                                        self.config.nova.path)
+
         if self.config.env.authentication == 'keystone_v2':
             self.servers_client = ServersClient(self.config.nova.username,
                                                 self.config.nova.api_key,
-                                                self.config.nova.auth_url,
+                                                self.auth_url,
                                                 self.config.nova.tenant_name)
             self.flavors_client = FlavorsClient(self.config.nova.username,
                                                 self.config.nova.api_key,
-                                                self.config.nova.auth_url,
+                                                self.auth_url,
                                                 self.config.nova.tenant_name)
             self.images_client = ImagesClient(self.config.nova.username,
                                               self.config.nova.api_key,
-                                              self.config.nova.auth_url,
+                                              self.auth_url,
                                               self.config.nova.tenant_name)
         else:
             #Assuming basic/native authentication
             self.servers_client = ServersClient(self.config.nova.username,
                                                 self.config.nova.api_key,
-                                                self.config.nova.auth_url)
+                                                self.auth_url)
             self.flavors_client = FlavorsClient(self.config.nova.username,
                                                 self.config.nova.api_key,
-                                                self.config.nova.auth_url)
+                                                self.auth_url)
             self.images_client = ImagesClient(self.config.nova.username,
                                               self.config.nova.api_key,
-                                              self.config.nova.auth_url)
+                                              self.auth_url)