diff --git a/strasbourg/index-formdefs-in-elasticsearch.py b/strasbourg/index-formdefs-in-elasticsearch.py
index f16d34c..54a7914 100644
--- a/strasbourg/index-formdefs-in-elasticsearch.py
+++ b/strasbourg/index-formdefs-in-elasticsearch.py
@@ -1,4 +1,7 @@
 #! /usr/bin/env python
+#
+# run as:
+# sudo -u wcs wcsctl runscript index-formdefs-in-elasticsearch.py --vhost=...
 
 from elasticsearch import Elasticsearch