diff --git a/.github/workflows/cpplint.yml b/.github/workflows/cpplint.yml
index 037ee88..5b9c41a 100644
--- a/.github/workflows/cpplint.yml
+++ b/.github/workflows/cpplint.yml
@@ -7,4 +7,4 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-python@v1
     - run: pip install cpplint
-    - run: cpplint --exclude=libraries/External/,--filter=-whitespace,-legal/copyright,-readability/braces,-build/include_subdir,-readability/casting --recursive .
+    - run: cpplint --exclude=./libraries/External,--filter=-whitespace,-legal/copyright,-readability/braces,-build/include_subdir,-readability/casting --recursive .