diff --git a/mylib/ldap.py b/mylib/ldap.py
index fc8fce8..082d395 100644
--- a/mylib/ldap.py
+++ b/mylib/ldap.py
@@ -697,6 +697,8 @@ class LdapClient:
 
         :param changes: The changes as returned by get_changes
         """
+        if changes is None:
+            return False
         assert self._conn or self.initialize()
         return self._conn.update_need(
             changes[0], changes[1],