diff --git a/data/hooks/backup/42-conf_ynh_dyndns b/data/hooks/backup/42-conf_ynh_dyndns
index 323464108..3dbcc2780 100644
--- a/data/hooks/backup/42-conf_ynh_dyndns
+++ b/data/hooks/backup/42-conf_ynh_dyndns
@@ -7,5 +7,5 @@ mkdir -p $YNH_CWD
 cd "$YNH_CWD"
 
 # Backup the configuration
-ynh_backup --src_path="/etc/yunohost/dyndns" --not_mandatory
-ynh_backup --src_path="/etc/cron.d/yunohost-dyndns" --not_mandatory
+ynh_exec_warn_less ynh_backup --src_path="/etc/yunohost/dyndns" --not_mandatory
+ynh_exec_warn_less ynh_backup --src_path="/etc/cron.d/yunohost-dyndns" --not_mandatory