diff --git a/.github/workflows/pr-health-check.yml b/.github/workflows/pr-health-check.yml
index fd085f4f..052de982 100644
--- a/.github/workflows/pr-health-check.yml
+++ b/.github/workflows/pr-health-check.yml
@@ -32,6 +32,7 @@ jobs:
               run: npm ci
   
             - name: Run commitlint on PR commits
+              if: github.event_name == 'pull_request'
               run: |
                 npx commitlint --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }} --verbose
 
@@ -91,7 +92,10 @@ jobs:
                 owner: xero-internal
                 workflow: pr.yml
                 ref: refs/heads/master
-                workflow_inputs: '{"branch_name": "${{github.head_ref}}" }'
+                workflow_inputs: >
+                  {
+                    "branch_name": "${{ github.event_name == 'pull_request' && github.head_ref || 'master' }}"
+                  }
             
             - name: Checking SDK health status
               uses: Codex-/await-remote-run@v1.12.2