diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index ed53c48..03f2b81 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -12,6 +12,7 @@ on:
 
 jobs:
   claude-review:
+    if: ${{ github.event.pull_request.head.repo.full_name == github.repository }}
     # Optional: Filter by PR author
     # if: |
     #   github.event.pull_request.user.login == 'external-contributor' ||