diff --git a/staffeln/api/app.py b/staffeln/api/app.py
index 5a18e2d..80c1bb2 100755
--- a/staffeln/api/app.py
+++ b/staffeln/api/app.py
@@ -15,7 +15,7 @@
 
 @app.route("/v1/backup", methods=["POST"])
 def backup_id():
-    openstacksdk = openstack()
+    openstacksdk = openstack.OpenstackSDK()
     retention_user_id = openstacksdk.get_user_id()
     
     if not "user_id" in request.args or not "backup_id" in request.args:
diff --git a/staffeln/common/openstack.py b/staffeln/common/openstack.py
index 8f545e7..1a7c10e 100644
--- a/staffeln/common/openstack.py
+++ b/staffeln/common/openstack.py
@@ -3,7 +3,7 @@
 from staffeln.common import auth
 
 
-class openstacksdk():
+class OpenstackSDK():
 
     def __init__(self):
         self.conn_list = {}
diff --git a/staffeln/conductor/backup.py b/staffeln/conductor/backup.py
index b2ce21e..5a489b3 100755
--- a/staffeln/conductor/backup.py
+++ b/staffeln/conductor/backup.py
@@ -6,11 +6,10 @@
 from openstack.exceptions import ResourceNotFound as OpenstackResourceNotFound
 from openstack.exceptions import SDKException as OpenstackSDKException
 from oslo_log import log
-from staffeln.common import auth
 from staffeln.common import context
 from staffeln import objects
 from staffeln.i18n import _
-from staffeln.common import openstack as openstacksdk
+from staffeln.common import openstack
 
 CONF = staffeln.conf.CONF
 LOG = log.getLogger(__name__)
@@ -36,7 +35,7 @@
     def __init__(self):
         self.ctx = context.make_context()
         self.result = result.BackupResult()
-        self.openstacksdk = openstacksdk()
+        self.openstacksdk = openstack.OpenstackSDK()
         self.project_list = {}
 
     def publish_backup_result(self):