diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index ce6f28e..8badb64 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -38,5 +38,5 @@ jobs:
           SMOKESHOW_GITHUB_COVERAGE_THRESHOLD: 50
           SMOKESHOW_GITHUB_CONTEXT: coverage
           SMOKESHOW_GITHUB_TOKEN: ${{ secrets.MY_GITHUB_TOKEN }}
-          SMOKESHOW_GITHUB_PR_HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          SMOKESHOW_GITHUB_PR_HEAD_SHA: ${{ github.sha }}
           SMOKESHOW_AUTH_KEY: ${{ secrets.SMOKESHOW_AUTH_KEY }}