diff --git a/paddleaudio/docs/README.md b/paddleaudio/docs/README.md
index f35d1d00e..20626f52b 100644
--- a/paddleaudio/docs/README.md
+++ b/paddleaudio/docs/README.md
@@ -9,7 +9,7 @@ Execute the following steps in **current directory**.
 
 ## 2. Generate API docs
 
-Generate API docs from doc string `*py`
+Generate API docs from doc string.
 
 `sphinx-apidoc -fMeT -o source ../paddleaudio ../paddleaudio/utils --templatedir source/_templates`