Use reference to the custom user model

src/authentic2_auth_msp/models.py

@@ -5,10 +5,10 @@ import urlparse
 
 from requests_oauthlib import OAuth2Session
 
+from authentic2.compat import user_model_label
 from django.db import models
 from django.db.models.query import Q
 from django.db.models.signals import post_save
-from django.contrib.auth import get_user_model
 from django.utils.translation import ugettext_lazy as _
 from django.dispatch import receiver
 
@@ -22,7 +22,7 @@ class MspAccountManager(models.Manager):
 
 
 class MspAccount(models.Model):
-    user = models.OneToOneField(get_user_model(),
+    user = models.OneToOneField(user_model_label,
             verbose_name=_('user'),
             default=None,
             null=True,