diff --git a/apps/authentication/mixins.py b/apps/authentication/mixins.py
index dd3653c6e..c74b1a5ff 100644
--- a/apps/authentication/mixins.py
+++ b/apps/authentication/mixins.py
@@ -455,7 +455,10 @@ class AuthMixin(CommonMixin, AuthPreCheckMixin, AuthACLMixin, MFAMixin, AuthPost
         )
         if not user:
             self.raise_credential_error(errors.reason_password_failed)
-        elif user.is_expired:
+
+        self.request.session['auth_backend'] = getattr(user, 'backend', settings.AUTH_BACKEND_MODEL)
+
+        if user.is_expired:
             self.raise_credential_error(errors.reason_user_expired)
         elif not user.is_active:
             self.raise_credential_error(errors.reason_user_inactive)