diff --git a/.github/workflows/smoketest.yml b/.github/workflows/smoketest.yml
index 7baaba7a1..27481a284 100644
--- a/.github/workflows/smoketest.yml
+++ b/.github/workflows/smoketest.yml
@@ -104,8 +104,8 @@ jobs:
           rclone_config: ${{ secrets.RCLONE_CONFIG }}
 
       - name: Upload audio files to Cloudflare R2
-        # If it's a PR, only run if the PR head is from the main repo, otherwise secrets will not be defined
-        if: ${{ github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository }}
+        # If it's a PR, only run if the PR head is not a fork
+        if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.head.repo.fork }}
         run: |
           rclone --fast-list -v --transfers=128 --checkers=256 --progress copy "./audio" "Cloudflare R2:/rail-announcements-audio"
         env: