diff --git a/letsencrypt/tests/test_letsencrypt.py b/letsencrypt/tests/test_letsencrypt.py
index bd02f6847..d5b65ce11 100644
--- a/letsencrypt/tests/test_letsencrypt.py
+++ b/letsencrypt/tests/test_letsencrypt.py
@@ -8,4 +8,7 @@ class TestLetsencrypt(TransactionCase):
     def test_letsencrypt(self):
         from ..hooks import post_init_hook
         post_init_hook(self.cr, None)
+        self.env.ref('letsencrypt.config_parameter_reload').write({
+            'value': '',
+        })
         self.env['letsencrypt'].with_context(letsencrypt_fake_cert=True).cron()