diff --git a/src/dns.py b/src/dns.py
index 318a5fcde..0b002d912 100644
--- a/src/dns.py
+++ b/src/dns.py
@@ -35,7 +35,6 @@ from moulinette.utils.log import getActionLogger
 from moulinette.utils.filesystem import read_file, write_to_file, read_toml, mkdir
 
 from yunohost.domain import (
-    domain_list,
     _assert_domain_exists,
     domain_config_get,
     _get_domain_settings,
diff --git a/src/domain.py b/src/domain.py
index e79d5acfd..5e338f4d4 100644
--- a/src/domain.py
+++ b/src/domain.py
@@ -25,7 +25,7 @@
 """
 import os
 import time
-from typing import List
+from typing import List, Optional
 from collections import OrderedDict
 
 from moulinette import m18n, Moulinette
@@ -53,7 +53,7 @@ DOMAIN_SETTINGS_DIR = "/etc/yunohost/domains"
 #  yunohost CLI and API which run in different processes
 domain_list_cache: List[str] = []
 domain_list_cache_timestamp = 0
-main_domain_cache: str = None
+main_domain_cache: Optional[str] = None
 main_domain_cache_timestamp = 0
 DOMAIN_CACHE_DURATION = 15
 
diff --git a/src/tests/test_ldapauth.py b/src/tests/test_ldapauth.py
index db5229342..25184ceac 100644
--- a/src/tests/test_ldapauth.py
+++ b/src/tests/test_ldapauth.py
@@ -49,7 +49,7 @@ def test_authenticate_with_user_who_is_not_admin():
     with pytest.raises(MoulinetteError) as exception:
         LDAPAuth().authenticate_credentials(credentials="bob:test123Ynh")
 
-    translation = m18n.n("invalid_password")
+    translation = m18n.n("invalid_credentials")
     expected_msg = translation.format()
     assert expected_msg in str(exception)
 
@@ -58,7 +58,7 @@ def test_authenticate_with_wrong_password():
     with pytest.raises(MoulinetteError) as exception:
         LDAPAuth().authenticate_credentials(credentials="alice:bad_password_lul")
 
-    translation = m18n.n("invalid_password")
+    translation = m18n.n("invalid_credentials")
     expected_msg = translation.format()
     assert expected_msg in str(exception)
 
@@ -78,7 +78,7 @@ def test_authenticate_change_password():
     with pytest.raises(MoulinetteError) as exception:
         LDAPAuth().authenticate_credentials(credentials="alice:Yunohost")
 
-    translation = m18n.n("invalid_password")
+    translation = m18n.n("invalid_credentials")
     expected_msg = translation.format()
     assert expected_msg in str(exception)