diff --git a/func/deb_sys.sh b/func/deb_sys.sh
index d888ccf..23d4d28 100644
--- a/func/deb_sys.sh
+++ b/func/deb_sys.sh
@@ -986,7 +986,7 @@ do_deb_sys_cert_install(){
   # Installation du cron
   # ------------------------------------------------------------------
 
-  update_cron_marker "$CONFIG_DEB_INSTALL_DEFAULT_CA_CRON" "0 0 1 * * $full_command"
+  update_cron_marker "$CONFIG_DEB_INSTALL_DEFAULT_CA_CRON" "0 0 * * 0 $full_command"
 
   # ------------------------------------------------------------------
   # Redémarrage final (sécurité)