diff --git a/src/authenticators/ldap_admin.py b/src/authenticators/ldap_admin.py
index 7f96165cb..872dd3c8d 100644
--- a/src/authenticators/ldap_admin.py
+++ b/src/authenticators/ldap_admin.py
@@ -120,7 +120,6 @@ class Authenticator(BaseAuthenticator):
 
         return infos
 
-    @staticmethod
     def delete_session_cookie(self):
 
         from bottle import response
diff --git a/src/authenticators/ldap_ynhuser.py b/src/authenticators/ldap_ynhuser.py
index 0e51d1925..fe2a657f5 100644
--- a/src/authenticators/ldap_ynhuser.py
+++ b/src/authenticators/ldap_ynhuser.py
@@ -133,7 +133,6 @@ class Authenticator(BaseAuthenticator):
 
         return infos
 
-    @staticmethod
     def delete_session_cookie(self):
 
         from bottle import response
diff --git a/src/tools.py b/src/tools.py
index b66d20811..467e33cfa 100644
--- a/src/tools.py
+++ b/src/tools.py
@@ -33,7 +33,7 @@ from typing import List
 
 from moulinette import Moulinette, m18n
 from moulinette.utils.log import getActionLogger
-from moulinette.utils.process import check_output, call_async_output
+from moulinette.utils.process import call_async_output
 from moulinette.utils.filesystem import read_yaml, write_to_yaml, cp, mkdir, rm
 
 from yunohost.app import (