diff --git a/moulinette/authenticators/ldap.py b/moulinette/authenticators/ldap.py
index aac1b2ff..15834678 100644
--- a/moulinette/authenticators/ldap.py
+++ b/moulinette/authenticators/ldap.py
@@ -216,6 +216,7 @@ class Authenticator(BaseAuthenticator):
         ldif = modlist.modifyModlist(actual_entry[0], attr_dict, ignore_oldexistent=1)
 
         if ldif == []:
+            logger.warning("Nothing to update in LDAP")
             return True
 
         try: