diff --git a/tests/app/test_mails.py b/tests/app/test_mails.py
index de86d756..adfd77f6 100644
--- a/tests/app/test_mails.py
+++ b/tests/app/test_mails.py
@@ -2,8 +2,7 @@ import smtplib
 import warnings
 from unittest import mock
 
-import ldap
-from flask import g
+from canaille import create_app
 from flask_webtest import TestApp
 
 
@@ -186,20 +185,15 @@ def test_default_from_addr(testclient, user, smtpd):
     assert smtpd.messages[0]["From"] == '"Canaille" <admin@localhost>'
 
 
-def test_default_from_flask_server_name(app, user, smtpd, slapd_server):
+def test_default_from_flask_server_name(configuration, user, smtpd, slapd_server):
+    app = create_app(configuration)
     del app.config["SMTP"]["FROM_ADDR"]
     app.config["SERVER_NAME"] = "foobar.tld"
 
     with app.app_context():
-        g.ldap_connection = ldap.ldapobject.SimpleLDAPObject(slapd_server.ldap_uri)
-        g.ldap_connection.protocol_version = 3
-        g.ldap_connection.simple_bind_s(slapd_server.root_dn, slapd_server.root_pw)
-
         testclient = TestApp(app)
         res = testclient.get("/reset", status=200)
         res.form["login"] = "user"
         res = res.form.submit(status=200)
         assert smtpd.messages[0]["X-MailFrom"] == "admin@foobar.tld"
         assert smtpd.messages[0]["From"] == '"Canaille" <admin@foobar.tld>'
-
-        g.ldap_connection.unbind_s()