diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 445097c9..e84668d2 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -98,7 +98,7 @@ jobs:
     name: Publish rebuilt metrics indexes
     runs-on: ubuntu-latest
     needs: [ build, analyze, format ]
-    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+    if: github.event_name == 'push' && github.head_ref == 'refs/heads/master'
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2