diff --git a/machines/models.py b/machines/models.py
index dc8ba25c..be88fe96 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -130,6 +130,7 @@ class Machine(RevMixin, FieldPermissionModelMixin, AclMixin, models.Model):
         :param user_request: Utilisateur qui fait la requête
         :param userid: id de l'user dont on va créer une machine
         :return: soit True, soit False avec la raison de l'échec"""
+        raise ValueError("Now you see me.")
         try:
             user = users.models.User.objects.get(pk=userid)
         except users.models.User.DoesNotExist:
diff --git a/topologie/models.py b/topologie/models.py
index 445d70e5..a184bde4 100644
--- a/topologie/models.py
+++ b/topologie/models.py
@@ -135,11 +135,26 @@ class AccessPoint(Machine):
     def __str__(self):
         return str(self.interface_set.first())
 
+    # We want to retrieve the default behaviour given by AclMixin rather
+    # than the one overwritten by Machine. If you are not familiar with
+    # the behaviour of `super`, please check https://docs.python.org/3/library/functions.html#super
+
     @classmethod
-    def get_instance(cls, object_id, *_args, **kwargs):
-        """Récupère une instance
-        :return: Une instance de la classe évidemment"""
-        return cls.objects.get(pk=object_id)
+    def get_instance(cls, *args, **kwargs):
+        return super(Machine, cls).get_instance(*args, **kwargs)
+
+    @classmethod
+    def can_create(cls, *args, **kwargs):
+        return super(Machine, cls).can_create(*args, **kwargs)
+
+    def can_edit(self, *args, **kwargs):
+        return super(Machine, self).can_edit(*args, **kwargs)
+
+    def can_delete(self, *args, **kwargs):
+        return super(Machine, self).can_delete(*args, **kwargs)
+
+    def can_view(self, *args, **kwargs):
+        return super(Machine, self).can_view(*args, **kwargs)
 
 
 class Server(Machine):
@@ -179,11 +194,26 @@ class Server(Machine):
     def __str__(self):
         return str(self.interface_set.first())
 
+    # We want to retrieve the default behaviour given by AclMixin rather
+    # than the one overwritten by Machine. If you are not familiar with
+    # the behaviour of `super`, please check https://docs.python.org/3/library/functions.html#super
+
     @classmethod
-    def get_instance(cls, object_id, *_args, **kwargs):
-        """Récupère une instance
-        :return: Une instance de la classe évidemment"""
-        return cls.objects.get(pk=object_id)
+    def get_instance(cls, *args, **kwargs):
+        return super(Machine, cls).get_instance(*args, **kwargs)
+
+    @classmethod
+    def can_create(cls, *args, **kwargs):
+        return super(Machine, cls).can_create(*args, **kwargs)
+
+    def can_edit(self, *args, **kwargs):
+        return super(Machine, self).can_edit(*args, **kwargs)
+
+    def can_delete(self, *args, **kwargs):
+        return super(Machine, self).can_delete(*args, **kwargs)
+
+    def can_view(self, *args, **kwargs):
+        return super(Machine, self).can_view(*args, **kwargs)
 
 
 class Switch(Machine):
@@ -469,11 +499,26 @@ class Switch(Machine):
     def __str__(self):
         return str(self.get_name)
 
+    # We want to retrieve the default behaviour given by AclMixin rather
+    # than the one overwritten by Machine. If you are not familiar with
+    # the behaviour of `super`, please check https://docs.python.org/3/library/functions.html#super
+
     @classmethod
-    def get_instance(cls, object_id, *_args, **kwargs):
-        """Récupère une instance
-        :return: Une instance de la classe évidemment"""
-        return cls.objects.get(pk=object_id)
+    def get_instance(cls, *args, **kwargs):
+        return super(Machine, cls).get_instance(*args, **kwargs)
+
+    @classmethod
+    def can_create(cls, *args, **kwargs):
+        return super(Machine, cls).can_create(*args, **kwargs)
+
+    def can_edit(self, *args, **kwargs):
+        return super(Machine, self).can_edit(*args, **kwargs)
+
+    def can_delete(self, *args, **kwargs):
+        return super(Machine, self).can_delete(*args, **kwargs)
+
+    def can_view(self, *args, **kwargs):
+        return super(Machine, self).can_view(*args, **kwargs)
 
 
 class ModelSwitch(AclMixin, RevMixin, models.Model):
diff --git a/topologie/templates/topologie/index.html b/topologie/templates/topologie/index.html
index 4d021779..85424b25 100644
--- a/topologie/templates/topologie/index.html
+++ b/topologie/templates/topologie/index.html
@@ -56,7 +56,7 @@ function toggle_graph() {
 </button>
 
 <a target="_blank" href="/media/images/switchs.png" class="btn btn-primary">
-  <span class="fa fa-arrows-alt"></span> 
+  <span class="fa fa-arrows-alt"></span>
 </a>
 
 <div id="collImg" class="collapse" aria-expanded="false">