diff --git a/data/users/externalldap.py b/data/users/externalldap.py
index 6642e7279..cce256f47 100644
--- a/data/users/externalldap.py
+++ b/data/users/externalldap.py
@@ -12,7 +12,7 @@ logger = logging.getLogger(__name__)
 
 _DEFAULT_NETWORK_TIMEOUT = 10.0 # seconds
 _DEFAULT_TIMEOUT = 10.0 # seconds
-_DEFAULT_PAGE_SIZE = 500
+_DEFAULT_PAGE_SIZE = 1000
 
 
 class LDAPConnectionBuilder(object):
@@ -276,13 +276,15 @@ class LDAPUsers(FederatedUsers):
                                                            cookie='')
 
       search_flt = '(memberOf=%s,%s)' % (group_dn, self._base_dn)
+      attributes = [self._uid_attr, self._email_attr]
 
       for user_search_dn in self._user_dns:
         # Conduct the initial search for users that are a member of the group.
         if disable_pagination:
-          msgid = conn.search(user_search_dn, ldap.SCOPE_SUBTREE, search_flt)
+          msgid = conn.search(user_search_dn, ldap.SCOPE_SUBTREE, search_flt, attrlist=attributes)
         else:
-          msgid = conn.search_ext(user_search_dn, ldap.SCOPE_SUBTREE, search_flt, serverctrls=[lc])
+          msgid = conn.search_ext(user_search_dn, ldap.SCOPE_SUBTREE, search_flt, serverctrls=[lc],
+                                  attrlist=attributes)
 
         while True:
           if disable_pagination: