diff --git a/README.md b/README.md
index 31951f5..8e3b550 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ jobs:
       - name: Run chart-testing (list-changed)
         id: list-changed
         run: |
-          changed=$(ct list-changed --targer-branch main)
+          changed=$(ct list-changed --target-branch ${{ github.event.repository.default_branch }})
           if [[ -n "$changed" ]]; then
             echo "::set-output name=changed::true"
           fi