diff --git a/README.md b/README.md
index 807d464..ab6c794 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@
 <img src="/doc/source/images/cuda_ge_10.1-orange.svg">
 </div>
 
+[![Documentation Status](https://github.com/csukuangfj/kaldifeat/actions/workflows/build-doc.yml/badge.svg)](https://csukuangfj.github.io/kaldifeat/)
+
 **Documentation**: <https://csukuangfj.github.io/kaldifeat>
 
 <sub>
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 59235e4..caa50b5 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -9,7 +9,7 @@ kaldifeat
 
 .. toctree::
    :maxdepth: 2
-   :caption: Contents:
+   :caption: Contents
 
    intro
    installation