diff --git a/.github/workflows/labels.yml b/.github/workflows/labels.yml
index c7104994e4..9d1971e94c 100644
--- a/.github/workflows/labels.yml
+++ b/.github/workflows/labels.yml
@@ -20,5 +20,5 @@ jobs:
           mode: exactly
           count: 1
           labels: "challenged"
-          add_comment: true
+          add_comment: "! github.event.pull_request.head.repo.fork"
           message: "This PR cannot be merged yet because a required label is missing: `{{ provided }}`. It needs to be added before this PR can be merged."