diff --git a/stages/test_files/EXPORT_GAN.xlsx b/stages/test_files/EXPORT_GAN.xlsx
index b227634..8c90ca5 100644
Binary files a/stages/test_files/EXPORT_GAN.xlsx and b/stages/test_files/EXPORT_GAN.xlsx differ
diff --git a/stages/tests.py b/stages/tests.py
index a86e2c7..1077c18 100644
--- a/stages/tests.py
+++ b/stages/tests.py
@@ -308,7 +308,7 @@ class ImportTests(TestCase):
         with open(path, 'rb') as fh:  # , override_settings(DEBUG=True):
             response = self.client.post(reverse('import-students'), {'upload': fh}, follow=True)
         msg = "\n".join(str(m) for m in response.context['messages'])
-        self.assertIn("Objets créés : 2", msg)
+        self.assertIn("Objets créés : 3", msg)
         student1 = Student.objects.get(last_name='Fellmann')
         self.assertEqual(student1.corporation.name, "Crèche Les Mousaillons")
         self.assertEqual(student1.option_ase.name, "Accompagnement des enfants")
diff --git a/stages/views.py b/stages/views.py
index 59a783c..290aee0 100644
--- a/stages/views.py
+++ b/stages/views.py
@@ -322,13 +322,17 @@ class StudentImportView(ImportViewBase):
                 # Second line for student, ignore it
                 continue
             seen_students_ids.add(student_defaults['ext_id'])
-            if isinstance(student_defaults['birth_date'], str):
+            if student_defaults['birth_date'] == '':
+                student_defaults['birth_date'] = None
+            elif isinstance(student_defaults['birth_date'], str):
                 student_defaults['birth_date'] = datetime.strptime(student_defaults['birth_date'], '%d.%m.%Y').date()
             if student_defaults['option_ase']:
                 try:
                     student_defaults['option_ase'] = Option.objects.get(name=student_defaults['option_ase'])
                 except Option.DoesNotExist:
                     del student_defaults['option_ase']
+            else:
+                del student_defaults['option_ase']
 
             corporation_defaults = {
                 val: strip(line[key]) for key, val in corporation_mapping.items()