diff --git a/tests/test_config.py b/tests/test_config.py
index 057f052..ecee23f 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -3,13 +3,14 @@
 
 import pytest
 
-from stacosys.service import config
+from stacosys.service.configuration import Config
 from stacosys.service.configuration import ConfigParameter
 
 EXPECTED_DB = "sqlite://db.sqlite"
 EXPECTED_HTTP_PORT = 8080
 EXPECTED_LANG = "fr"
 
+config = Config()
 
 @pytest.fixture
 def init_config():
diff --git a/tests/test_form.py b/tests/test_form.py
index d27b89e..875dbf6 100644
--- a/tests/test_form.py
+++ b/tests/test_form.py
@@ -7,6 +7,9 @@ import pytest
 
 from stacosys.db import database
 from stacosys.interface import app, form
+from stacosys.service.configuration import Config
+from stacosys.service.mail import Mailer
+from stacosys.service.rssfeed import Rss
 
 
 @pytest.fixture
@@ -14,6 +17,9 @@ def client():
     logger = logging.getLogger(__name__)
     database.configure("sqlite:memory://db.sqlite")
     logger.info(f"start interface {form}")
+    app.config['CONFIG'] = Config()
+    app.config['MAILER'] = Mailer()
+    app.config['RSS'] = Rss()
     return app.test_client()
 
 
diff --git a/tests/test_mail.py b/tests/test_mail.py
index 992845f..69aa307 100644
--- a/tests/test_mail.py
+++ b/tests/test_mail.py
@@ -3,10 +3,11 @@
 
 import pytest
 
-from stacosys.service import mailer
+from stacosys.service.mail import Mailer
 
 
 def test_configure_and_check():
+    mailer = Mailer()
     mailer.configure_smtp("localhost", 2525, "admin", "admin")
     mailer.configure_destination("admin@mydomain.com")
     with pytest.raises(ConnectionRefusedError):
diff --git a/tests/test_rssfeed.py b/tests/test_rssfeed.py
index e2a15b9..5b102fe 100644
--- a/tests/test_rssfeed.py
+++ b/tests/test_rssfeed.py
@@ -1,8 +1,9 @@
 #!/usr/bin/env python
 # -*- coding: UTF-8 -*-
 
-from stacosys.service import rss
+from stacosys.service.rssfeed import Rss
 
 
 def test_configure():
+    rss = Rss()
     rss.configure("comments.xml", "blog", "http", "blog.mydomain.com")