diff --git a/.github/workflows/flake8.yml b/.github/workflows/flake8.yml
index e0936062..41f6d9e4 100644
--- a/.github/workflows/flake8.yml
+++ b/.github/workflows/flake8.yml
@@ -17,5 +17,5 @@ jobs:
         uses: py-actions/flake8@v1
         with:
           ignore: "E501"
-          exclude: "pyerrors/__init__.py", "pyerrors/input/__init__.py"
+          exclude: "pyerrors/__init__.py, pyerrors/input/__init__.py"
           path: "pyerrors"