diff --git a/.github/workflows/cos.yaml b/.github/workflows/cos.yaml
index fe5dd1b..282e6e6 100644
--- a/.github/workflows/cos.yaml
+++ b/.github/workflows/cos.yaml
@@ -7,6 +7,7 @@ on:
 
 jobs:
   build:
+    if: github.repository == 'camera-2018/hdu-cs-wiki'
     runs-on: ubuntu-latest
         
     steps: