diff --git a/demo/tests/test_integration.py b/demo/tests/test_integration.py
index 5c9c23fa..25420de1 100644
--- a/demo/tests/test_integration.py
+++ b/demo/tests/test_integration.py
@@ -410,6 +410,20 @@ def test_validate_data_ok(self):
         )
         self.assertEqual(res.status_code, 204)
 
+    def test_validate_does_not_exist(self):
+        parameters = {
+            'first_name': 'Guillaume',
+            'last_name': 'Gérard',
+        }
+        session = self.client.session
+        session['role'] = 'padawan'
+        session.save()
+        res = self.client.get(
+            reverse(self.url, args=[9999]),
+            parameters, format='json'
+        )
+        self.assertEqual(res.status_code, 404)
+
     def test_validate_data_ko(self):
         parameters = {
             'last_name': 'Gérard',
diff --git a/formidable/views.py b/formidable/views.py
index f1e4836e..d5d752dc 100644
--- a/formidable/views.py
+++ b/formidable/views.py
@@ -242,7 +242,7 @@ def get(self, request, **kwargs):
         try:
             formidable = self.get_formidable_object(kwargs)
         except Formidable.DoesNotExist:
-            raise exceptions.Http404()
+            raise exceptions.NotFound()
 
         form_class = self.get_form_class(formidable)
         form = self.get_form(form_class)