diff --git a/apps/registration/tests.py b/apps/registration/tests.py
index ad1ddc2..1ce4bea 100644
--- a/apps/registration/tests.py
+++ b/apps/registration/tests.py
@@ -1,6 +1,8 @@
 from datetime import timedelta
 import os
 
+from django.core.files.uploadedfile import SimpleUploadedFile
+
 from corres2math.tokens import email_validation_token
 from django.contrib.auth.models import User
 from django.contrib.contenttypes.models import ContentType
@@ -286,6 +288,14 @@ class TestRegistration(TestCase):
         ))
         self.assertEqual(response.status_code, 200)
 
+        # Don't send too large files
+        response = self.client.post(reverse("registration:upload_user_photo_authorization",
+                                            args=(self.student.registration.pk,)), data=dict(
+            photo_authorization=SimpleUploadedFile("file.pdf",content=int(0).to_bytes(2000001, "big"),
+                                                   content_type="application/pdf"),
+        ))
+        self.assertEqual(response.status_code, 200)
+
         response = self.client.post(reverse("registration:upload_user_photo_authorization",
                                             args=(self.student.registration.pk,)), data=dict(
             photo_authorization=open("corres2math/static/Autorisation de droit à l'image - majeur.pdf", "rb"),