diff --git a/.github/workflows/repo-automator.yml b/.github/workflows/repo-automator.yml
index 93ddaf647..c23f79e82 100644
--- a/.github/workflows/repo-automator.yml
+++ b/.github/workflows/repo-automator.yml
@@ -19,6 +19,7 @@ on:
 jobs:
   Validate:
     runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'pull_request' && ! github.event.pull_request.head.repo.fork }}
 
     steps:
       - uses: 10up/action-repo-automator@trunk