diff --git a/modules/ldap_authentication/res.py b/modules/ldap_authentication/res.py
index d6131d19f4..d9f4bdcd5e 100644
--- a/modules/ldap_authentication/res.py
+++ b/modules/ldap_authentication/res.py
@@ -68,7 +68,9 @@ class User(metaclass=PoolMeta):
         scope = {
             'base': ldap3.BASE,
             'onelevel': ldap3.LEVEL,
+            'one': ldap3.LEVEL,
             'subtree': ldap3.SUBTREE,
+            'sub': ldap3.SUBTREE,
             }[scope]
         uid = config.get(section, 'uid', default='uid')
         if filter_: