diff --git a/docs/topics/auth/customizing.txt b/docs/topics/auth/customizing.txt
index 84f0782..9e5d56f 100644
a
|
b
|
password resets. You must then provide some key implementation details:
|
574 | 574 | model instances during the :djadmin:`createsuperuser` prompt, expect the |
575 | 575 | user to enter the value of :attr:`~django.db.models.ForeignKey.to_field` |
576 | 576 | value (the :attr:`~django.db.models.Field.primary_key` by default) of an |
577 | | existing instance. |
| 577 | existing instance. In order to allow `clean()` to work with a foreign |
| 578 | key, you must prevent :meth:`~AbstractBaseUser.normalize_username` from |
| 579 | converting your foreign key to a string, e.g. by overwriting this |
| 580 | method. |
578 | 581 | |
579 | 582 | .. attribute:: EMAIL_FIELD |
580 | 583 | |