diff --git a/zzz_evobackup b/zzz_evobackup
index 7dd5d09..a6ef7dc 100755
--- a/zzz_evobackup
+++ b/zzz_evobackup
@@ -121,8 +121,9 @@ mkdir -p -m 700 /home/backup
 ## Redis : example with copy .rdb file
 # cp /var/lib/redis/dump.rdb /home/backup/
 
-## ElasticSearch : example with rsync (warning: don't forget to use NFS if you have a cluster)
-## Here we have one snapshot a day.
+## ElasticSearch, take a snapshot as a backup.
+## Warning: You need to have a path.repo configured.
+## See: https://wiki.evolix.org/HowtoElasticsearch#snapshots-et-sauvegardes
 # curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot.daily" -o /tmp/es_delete_snapshot.daily.log
 # curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot.daily?wait_for_completion=true" -o /tmp/es_snapshot.daily.log