diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index 8763eca23..2a1657979 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -5,6 +5,7 @@ on:
 
 jobs:
   preview:
+    if: github.event.pull_request.head.repo.fork == false
     name: Run preview
     runs-on: ubuntu-latest
     env: