diff --git a/apps/registration/tests.py b/apps/registration/tests.py
index 5991cdb..a2d0947 100644
--- a/apps/registration/tests.py
+++ b/apps/registration/tests.py
@@ -179,6 +179,14 @@ class TestRegistration(TestCase):
         """
         Update the user information, for each type of user.
         """
+        # To test the modification of mailing lists
+        from participation.models import Team
+        self.student.registration.team = Team.objects.create(
+            name="toto",
+            trigram="TOT",
+        )
+        self.student.registration.save()
+
         for user, data in [(self.user, dict(role="Bot")),
                            (self.student, dict(student_class=11, school="Sky")),
                            (self.coach, dict(professional_activity="God"))]: