diff --git a/.github/workflows/codingstyle.yml b/.github/workflows/codingstyle.yml
index cf4a2fb3..adc1fe36 100644
--- a/.github/workflows/codingstyle.yml
+++ b/.github/workflows/codingstyle.yml
@@ -10,7 +10,7 @@ jobs:
         run: pip install cpplint
       - name: Check coding style
         run: |
-          cpplint --recursive --quiet . 2> tmp || (echo "CPP_LINT_LOG=$(cat tmp)" >> $GITHUB_ENV && false)
+          cpplint --recursive --quiet . 2> tmp || (echo "CPP_LINT_LOG=$(cat tmp)" >> $GITHUB_ENV && cat tmp && false)
       - name: Comment PR
         if: ${{ failure() && github.event_name == 'pull_request' }}
         uses: thollander/actions-comment-pull-request@master