fix NameError
diff --git a/plstackapi/planetstack/api/roles.py b/plstackapi/planetstack/api/roles.py
index 12a21b8..5d1bfaf 100644
--- a/plstackapi/planetstack/api/roles.py
+++ b/plstackapi/planetstack/api/roles.py
@@ -4,9 +4,9 @@
 
 
 def auth_check(auth):
-    client = OpenStackShell(username=auth['Username'],
-                            password=auth['AuthMethod'],
-                            tenant=auth['LoginBase'])
+    client = OpenStackDriver(username=auth['Username'],
+                             password=auth['AuthMethod'],
+                             tenant=auth['LoginBase'])
     client.authenticate()
     return client