diff --git a/users/forms.py b/users/forms.py
index ac8e9923..74d6694e 100644
--- a/users/forms.py
+++ b/users/forms.py
@@ -450,7 +450,7 @@ class ListRightForm(ModelForm):
 
     class Meta:
         model = ListRight
-        fields = ['name', 'unix_name', 'permissions', 'details']
+        fields = ['name', 'unix_name', 'critical', 'permissions', 'details']
 
     def __init__(self, *args, **kwargs):
         prefix = kwargs.pop('prefix', self.Meta.model.__name__)
diff --git a/users/migrations/0068_auto_20180107_2245.py b/users/migrations/0068_auto_20180107_2245.py
new file mode 100644
index 00000000..3ce232dc
--- /dev/null
+++ b/users/migrations/0068_auto_20180107_2245.py
@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2018-01-07 21:45
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0067_serveurpermission'),
+    ]
+
+    def transfer_permissions(apps, schema_editor):
+        critical_rights = ['adm', 'admin', 'bureau', 'infra', 'tresorier', 'serveur', 'bofh']
+        db_alias = schema_editor.connection.alias
+        rights = apps.get_model("users", "ListRight")
+        for right in critical_rights:
+            rg = rights.objects.using(db_alias).filter(unix_name=right).first()
+            rg.critical=True
+            rg.save()
+
+    def untransfer_permissions(apps, schema_editor):
+        return
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='user',
+            options={'permissions': (('change_user_password', "Peut changer le mot de passe d'un user"), ('change_user_state', "Peut éditer l'etat d'un user"), ('change_user_force', 'Peut forcer un déménagement'), ('change_user_shell', "Peut éditer le shell d'un user"), ('change_user_groups', "Peut éditer les groupes d'un user ! Permission critique"), ('change_all_users', 'Peut éditer tous les users, y compris ceux dotés de droits. Superdroit'), ('view_user', 'Peut voir un objet user quelquonque'))},
+        ),
+        migrations.AddField(
+            model_name='listright',
+            name='critical',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.RunPython(transfer_permissions, untransfer_permissions),
+    ]
diff --git a/users/models.py b/users/models.py
index 9761cc20..83fb2788 100644
--- a/users/models.py
+++ b/users/models.py
@@ -233,6 +233,7 @@ class User(FieldPermissionModelMixin, AbstractBaseUser, PermissionsMixin):
             ("change_user_force", "Peut forcer un déménagement"),
             ("change_user_shell", "Peut éditer le shell d'un user"),
             ("change_user_groups", "Peut éditer les groupes d'un user ! Permission critique"),
+            ("change_all_users", "Peut éditer tous les users, y compris ceux dotés de droits. Superdroit"),
             ("view_user", "Peut voir un objet user quelquonque"),
         )
 
@@ -712,7 +713,19 @@ class User(FieldPermissionModelMixin, AbstractBaseUser, PermissionsMixin):
             else:
                 return False, u"Vous n'avez pas le droit d'éditer ce club"
         else:
-            if self == user_request or user_request.has_perm('users.change_user'):
+            options, _created = AssoOption.objects.get_or_create()
+            if self == user_request:
+                return True, None
+            elif user_request.has_perm('users.change_all_users'):
+                return True, None
+            elif user_request.has_perm('users.change_user'):
+                if self.groups.filter(listright__critical=True):
+                    return False, u"Utilisateurs avec droits critiques, ne peut etre édité"
+                elif self == options.utilisateur_asso:
+                    return False, u"Impossible d'éditer l'utilisateur asso sans droit change_all_users"
+                else:
+                    return True, None
+            elif user_request.has_perm('users.change_all_users'):
                 return True, None
             else:
                 return False, u"Vous ne pouvez éditer un autre utilisateur que vous même"
@@ -1112,6 +1125,7 @@ class ListRight(Group):
         )]
     )
     gid = models.PositiveIntegerField(unique=True, null=True)
+    critical = models.BooleanField(default=False)
     details = models.CharField(
         help_text="Description",
         max_length=255,
diff --git a/users/templates/users/aff_listright.html b/users/templates/users/aff_listright.html
index 080a7388..b8a8008c 100644
--- a/users/templates/users/aff_listright.html
+++ b/users/templates/users/aff_listright.html
@@ -27,6 +27,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
             <tr>
                 <th>Droit</th>
                 <th>Gid</th>
+		<th>Groupe/permission critique</th>
                 <th>Informations</th>
                 <th>Details</th>
 		<th></th>
@@ -38,6 +39,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
                 {{ listright.name }}
             </td>
             <td>{{ listright.gid }}</td>
+	    <td>{{ listright.critical }}</td>
             <td>
                 <div class="dropdown">
                     <button class="btn btn-default" data-parent="#accordion_{{listright.gid}}" type="button" data-toggle="collapse" data-target="#collapseListRight_user_{{listright.gid}}" aria-expanded="true" aria-controls="collapseListRight_user_{{listright.gid}}">