diff --git a/README.rst b/README.rst
index cb0f544..b6871aa 100644
--- a/README.rst
+++ b/README.rst
@@ -246,6 +246,8 @@ If your SAML2 identity provider uses user attribute names other than the
 defaults listed in the `settings.py` `ATTRIBUTES_MAP`, update them in
 `settings.py`.
 
+If using a custom User model, update or remove the Backend model specification in views.py
+
 
 For Okta Users
 ==============
diff --git a/django_saml2_auth/views.py b/django_saml2_auth/views.py
index 865c112..1731a9f 100644
--- a/django_saml2_auth/views.py
+++ b/django_saml2_auth/views.py
@@ -196,6 +196,7 @@ def acs(r):
     r.session.flush()
 
     if target_user.is_active:
+        # When using a custom User model, update or remove this backend model specification
         target_user.backend = 'django.contrib.auth.backends.ModelBackend'
         login(r, target_user)
     else: