diff --git a/src/yunohost/settings.py b/src/yunohost/settings.py
index db94e7429..c1edadb93 100644
--- a/src/yunohost/settings.py
+++ b/src/yunohost/settings.py
@@ -321,6 +321,7 @@ def reconfigure_ssh(setting_name, old_value, new_value):
     if old_value != new_value:
         service_regen_conf(names=['ssh'])
 
+@post_change_hook("smtp.allow_ipv6")
 @post_change_hook("security.postfix.compatibility")
 def reconfigure_postfix(setting_name, old_value, new_value):
     if old_value != new_value: