diff --git a/HowtoElasticsearch.md b/HowtoElasticsearch.md
index 74be28de..cf02a0e3 100644
--- a/HowtoElasticsearch.md
+++ b/HowtoElasticsearch.md
@@ -631,7 +631,8 @@ Voici un exemple qui pour les index nommés `logstash-*`, ne va conserver que le
 ~~~{.bash}
 #!/bin/bash
 
-indices=$(curl http://127.0.0.1:9200/_cat/indices/logstash-*?h=i | sort | head -n -20)
+#garder les 10 plus récent
+indices=$(curl http://127.0.0.1:9200/_cat/indices/logstash-*?h=i | sort | head -n -10)
 
 for index in ${indices}; do
     # echo Delete ${index}