diff --git a/etc/koha-conf.xml b/etc/koha-conf.xml
index 4925dd192c..03215e7446 100644
--- a/etc/koha-conf.xml
+++ b/etc/koha-conf.xml
@@ -171,8 +171,8 @@
      <cxn_pool>Static</cxn_pool>
      <!-- See https://metacpan.org/pod/Search::Elasticsearch#trace_to -->
      <!-- <trace_to>Stderr</trace_to> -->
-     <!-- You can specify the maximum chunk size for records when batch processing in Koha -->
-     <!-- <chunk_size>500</chunk_size> -->
+     <!-- You can specify the maximum chunk size for records when batch processing in Koha, default is 5000 -->
+     <!-- <chunk_size>5000</chunk_size> -->
  </elasticsearch>
  <!-- Uncomment the following line if you want to override the Elasticsearch default index settings -->
  <!-- <elasticsearch_index_config>__KOHA_CONF_DIR__/searchengine/elasticsearch/index_config.yaml</elasticsearch_index_config> -->