diff --git a/.github/workflows/backwards-compatibility-checks.yaml b/.github/workflows/backwards-compatibility-checks.yaml
index d70fede112d9..284f12f30e9e 100644
--- a/.github/workflows/backwards-compatibility-checks.yaml
+++ b/.github/workflows/backwards-compatibility-checks.yaml
@@ -69,7 +69,7 @@ jobs:
         # OwlBot PRs which are not labelled feat should not add new files or methods
         run: |
           ~/.composer/vendor/bin/roave-backward-compatibility-check \
-            --from=${{ github.ref_name }} \
+            --from=${{ github.head_ref || github.ref_name }} \
             --to=origin/main --format=github-actions
       - name: "Print the action item"
         run: |