diff --git a/.github/workflows/autoupdatefork.yml b/.github/workflows/autoupdatefork.yml
index 6392e1908..bcaf28d49 100644
--- a/.github/workflows/autoupdatefork.yml
+++ b/.github/workflows/autoupdatefork.yml
@@ -15,6 +15,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.event.repository.owner.id == github.event.sender.id
     steps:
     - name: Checkout
       uses: actions/checkout@v2