diff --git a/README.md b/README.md
index 80caaf0..5278384 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ towhee.dc['vec'](query) \
 
 Create the operator via the following factory method:
 
-***ann-search.faiss(findex)***
+***ann_search.faiss(findex)***
 
 <br />