diff --git a/src/core_plugins/timelion/server/series_functions/es/index.js b/src/core_plugins/timelion/server/series_functions/es/index.js
index 94b563394db389a..75c739de991ede9 100644
--- a/src/core_plugins/timelion/server/series_functions/es/index.js
+++ b/src/core_plugins/timelion/server/series_functions/es/index.js
@@ -27,7 +27,7 @@ export default new Datasource('es', {
     {
       name: 'index',
       types: ['string', 'null'],
-      help: 'Index to query, wildcards accepted'
+      help: 'Index to query, wildcards accepted. Provide Index Pattern name for scripted field support.'
     },
     {
       name: 'timefield',