diff --git a/.github/workflows/check-pr-to-release.yml b/.github/workflows/check-pr-to-release.yml
index a232d23..183e2d6 100644
--- a/.github/workflows/check-pr-to-release.yml
+++ b/.github/workflows/check-pr-to-release.yml
@@ -71,5 +71,5 @@ jobs:
               run: exit 1
 
             - name: Assert release version matches RC branch name
-              if: format('rc/v{0}', steps.version.outputs.releaseShort) != github.head_ref
+              if: format('rc/v{0}', steps.version.outputs.releaseShort) != github.event.pull_request.head.ref
               run: exit 1