diff --git a/.github/workflows/refresh-csl-subtrees.yml b/.github/workflows/refresh-csl-subtrees.yml
index b6bcffbf6e9..6105da186cc 100644
--- a/.github/workflows/refresh-csl-subtrees.yml
+++ b/.github/workflows/refresh-csl-subtrees.yml
@@ -13,6 +13,7 @@ jobs:
   publish:
     name: Refresh Citation Style Language Files
     runs-on: ubuntu-latest
+    if: github.repository == 'JabRef/jabref'
     steps:
       - name: Checkout source
         uses: actions/checkout@v2