diff --git a/HowtoCron.md b/HowtoCron.md
index 19c5aab7..e9abb756 100644
--- a/HowtoCron.md
+++ b/HowtoCron.md
@@ -77,7 +77,7 @@ Exemples de crontab :
 
 ~~~
 0,30,45,51 * * * * /usr/local/adm/send-data
-*/15 * * * * /usr/local/adm/check-nis &> /dev/null
+*/15 * * * * /usr/local/adm/check-nis 1>/dev/null 2>&1
 00 01 * * * nice -10 find /inf -name core -exec rm -f {} \;
 10 03 * * 1-6 nice -10 /usr/local/adm/sauvegarde-daily
 30 05 * * 0 /usr/local/adm/savelog-weekly