diff --git a/docs/advanced_topics/customisation/admin_templates.rst b/docs/advanced_topics/customisation/admin_templates.rst
index b0a638780..96dc71e24 100644
--- a/docs/advanced_topics/customisation/admin_templates.rst
+++ b/docs/advanced_topics/customisation/admin_templates.rst
@@ -43,6 +43,8 @@ To replace the default logo, create a template file ``dashboard/templates/wagtai
{% endblock %}
+The logo also appears on the admin 404 error page; to replace it there too, create a template file ``dashboard/templates/wagtailadmin/404.html`` that overrides the ``branding_logo`` block.
+
``branding_favicon``
--------------------
diff --git a/wagtail/wagtailadmin/templates/wagtailadmin/404.html b/wagtail/wagtailadmin/templates/wagtailadmin/404.html
index e94fbf98d..34d03c7e2 100644
--- a/wagtail/wagtailadmin/templates/wagtailadmin/404.html
+++ b/wagtail/wagtailadmin/templates/wagtailadmin/404.html
@@ -13,7 +13,9 @@
{% block furniture %}