diff --git a/users/forms.py b/users/forms.py
index e52c79fb..72094d22 100644
--- a/users/forms.py
+++ b/users/forms.py
@@ -441,7 +441,7 @@ class ListRightForm(ModelForm):
     """Edition, d'un groupe , équivalent à un droit
     Ne peremet pas d'editer le gid, car il sert de primary key"""
     permissions = forms.ModelMultipleChoiceField(
-        Permission.objects.all(),
+        Permission.objects.all().select_related('content_type'),
         widget=forms.CheckboxSelectMultiple,
         required=False
     )
diff --git a/users/views.py b/users/views.py
index 5981d4b1..11da6843 100644
--- a/users/views.py
+++ b/users/views.py
@@ -710,7 +710,8 @@ def index_school(request):
 @can_view_all(ListRight)
 def index_listright(request):
     """ Affiche l'ensemble des droits , need droit cableur """
-    listright_list = ListRight.objects.order_by('unix_name')
+    listright_list = ListRight.objects.order_by('unix_name')\
+        .prefetch_related('permissions').prefetch_related('user_set')
     return render(
         request,
         'users/index_listright.html',