diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 68eacdd..785a44c 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -18,7 +18,7 @@ jobs:
         uses: DoozyX/clang-format-lint-action@v0.16.2
         with:
           source: "."
-          extensions: "h, cpp"
+          extensions: "h,cpp"
           clangFormatVersion: 16
           inplace: true