--- a/server/ammico/models.py	Fri Mar 20 11:32:02 2015 +0100
+++ b/server/ammico/models.py	Mon Mar 23 12:20:28 2015 +0100
@@ -1,9 +1,10 @@
+from django.contrib.auth.models import User
 from django.db import models
 from taggit.managers import TaggableManager
-from django.contrib.auth.models import User
+
 
 class AmmicoUser(models.Model):
-    user = models.ForeignKey(User)
+    user = models.OneToOneField(User)
     idUser = models.CharField(max_length=512, unique=True)
     image = models.URLField(max_length=2048, blank=True)