fix NameError
diff --git a/plstackapi/planetstack/api/users.py b/plstackapi/planetstack/api/users.py
index b9e4fca..f02f9d2 100644
--- a/plstackapi/planetstack/api/users.py
+++ b/plstackapi/planetstack/api/users.py
@@ -52,7 +52,7 @@
 
 def delete_user(auth, filter={}):
     driver = OpenStackDriver(client = auth_check(auth))   
-    users = Users.objects.filter(**filter)
+    users = User.objects.filter(**filter)
     for user in users:
         driver.delete_user(id=user.user_id) 
         user.delete()