diff --git a/zds/member/api/tests.py b/zds/member/api/tests.py
index b650c813c4..bff79a2985 100644
--- a/zds/member/api/tests.py
+++ b/zds/member/api/tests.py
@@ -145,14 +145,17 @@ def test_search_with_results_in_right_order(self):
         Gets list of users corresponding to part of a username and
         verifies that the list of usernames returned is in the right order.
         """
+        already_existing = []
         for username in ("andr", "Radon", "alexandre", "MisterAndrew", "andré", "Andr", "dragon", "Andromède"):
             try:  # in case this username has already been used by another test
-                Profile.objects.get(user__username=username)
+                p = Profile.objects.get(user__username=username)
+                already_existing.append((username, p))
             except Profile.DoesNotExist:
                 ProfileFactory(user__username=username)
 
         response = self.client.get(reverse("api:member:list") + "?search=Andr")
         list_of_usernames = [item.get("username") for item in response.data.get("results")]
+        self.assertEqual(already_existing, [])
         self.assertEqual(list_of_usernames, ["Andr", "andr", "Andromède", "andré", "MisterAndrew", "alexandre"])
 
     def test_register_new_user(self):