diff --git a/.gitattributes b/.gitattributes
index 0478399..a04cd83 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,2 @@
 src/binding.gyp linguist-vendored
+src/include/** linguist-vendored
diff --git a/.github/workflows/cpplint.yml b/.github/workflows/cpplint.yml
index 4b9ac37..fe42ea7 100644
--- a/.github/workflows/cpplint.yml
+++ b/.github/workflows/cpplint.yml
@@ -43,4 +43,4 @@ jobs:
       - name: Run Cpplint
         run: |
           node -e "require('addon-tools-raub').cpcpplint()"
-          cpplint --recursive ./src
+          cpplint --recursive ./src/cpp
diff --git a/README.md b/README.md
index e5b89ef..dddcdcb 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,9 @@ This is a part of [Node3D](https://github.com/node-3d) project.
 [![NPM](https://badge.fury.io/js/glfw-raub.svg)](https://badge.fury.io/js/glfw-raub)
 [![ESLint](https://github.com/node-3d/glfw-raub/actions/workflows/eslint.yml/badge.svg)](https://github.com/node-3d/glfw-raub/actions/workflows/eslint.yml)
 [![Test](https://github.com/node-3d/glfw-raub/actions/workflows/test.yml/badge.svg)](https://github.com/node-3d/glfw-raub/actions/workflows/test.yml)
+[![Cpplint](https://github.com/node-3d/glfw-raub/actions/workflows/cpplint.yml/badge.svg)](https://github.com/node-3d/glfw-raub/actions/workflows/cpplint.yml)
 
-```
+```console
 npm i -s glfw-raub
 ```