diff --git a/.github/workflows/sync.yml b/.github/workflows/sync.yml
index 8b4d073..0a827f1 100644
--- a/.github/workflows/sync.yml
+++ b/.github/workflows/sync.yml
@@ -6,6 +6,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.repository == 'doocs/md'
     steps:
     - name: Sync to Gitee
       uses: wearerequired/git-mirror-action@master