diff --git a/gestioncof/petits_cours_models.py b/gestioncof/petits_cours_models.py
index 753e8674..d9ea9668 100644
--- a/gestioncof/petits_cours_models.py
+++ b/gestioncof/petits_cours_models.py
@@ -157,14 +157,16 @@ class PetitCoursAttributionCounter(models.Model):
         compteurs de tout le monde.
         """
         counter, created = cls.objects.get_or_create(
-            user=user, matiere=matiere)
+            user=user,
+            matiere=matiere,
+        )
         if created:
             mincount = (
                 cls.objects.filter(matiere=matiere).exclude(user=user)
                 .aggregate(Min('count'))
                 ['count__min']
             )
-            counter.count = mincount
+            counter.count = mincount or 0
             counter.save()
         return counter