diff --git a/.github/workflows/drive.yml b/.github/workflows/drive.yml
index cda66a4a..37c08533 100644
--- a/.github/workflows/drive.yml
+++ b/.github/workflows/drive.yml
@@ -28,7 +28,9 @@ jobs:
       - name: Install gitlint
         run: pip install --user requests gitlint
       - name: Lint commit messages added to main
-        run: ~/.local/bin/gitlint --commits origin/${{ github.event.pull_request.base.ref }}..HEAD
+        env:
+          BASE_REF: ${{ github.event.pull_request.base.ref }}
+        run: ~/.local/bin/gitlint --commits origin/${BASE_REF}..HEAD
 
   check-changelog:
     runs-on: ubuntu-latest