diff --git a/README.md b/README.md
index 0553c9b..77a5257 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ example_doc = {
 
 es_insert = (
     pipe.input('index_name', 'doc')
-        .map(('index_name', 'doc'), 'res', ops.elasticsearch.index_client(
+        .map(('index_name', 'doc'), 'res', ops.elasticsearch.osschat_index(
             host='localhost', port=9200
         ))
         .output('doc', 'res')