diff --git a/.github/workflows/on-commit.yml b/.github/workflows/on-commit.yml
index c67ff20e..2d26a73d 100644
--- a/.github/workflows/on-commit.yml
+++ b/.github/workflows/on-commit.yml
@@ -23,6 +23,7 @@ jobs:
   Test-Sphinx:
     runs-on: ubuntu-latest
     if: |
+      github.event_name == 'pull_request' &&
       github.event.pull_request.base.ref == 'refs/heads/main'
     steps:
       - uses: actions/checkout@v3