diff --git a/.github/workflows/label-commenter.yaml b/.github/workflows/label-commenter.yaml
index b10a8268..91296a90 100644
--- a/.github/workflows/label-commenter.yaml
+++ b/.github/workflows/label-commenter.yaml
@@ -22,7 +22,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
       with:
-        ref: main # Set your default branch
+        ref: master
 
     - name: Label Commenter
       uses: peaceiris/actions-label-commenter@v1