diff --git a/tests/conftest.py b/tests/conftest.py
index 366784b..e328a03 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -237,7 +237,7 @@ def rsu(rsu_schema):
     for i in range(1000):
         individu = {}
         individu['genre'] = genre = sexes[random.randint(0, 2)]
-        individu['email'] = str(i) + fake.email()
+        individu['email'] = ('%05d' % i) + fake.email()
         if genre == 'femme':
             individu['prenoms'] = fake.first_name_female()
             individu['nom_de_naissance'] = fake.last_name_female()