diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index b5b6fce8..7af64b76 100644
--- a/.github/workflows/mdbook.yml
+++ b/.github/workflows/mdbook.yml
@@ -49,6 +49,7 @@ jobs:
         with:
           path: ./book
   deploy:
+    if: github.repository == 'Whisky-App/whisky-book'
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}