diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a585b6e80..f737a1539 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -99,9 +99,9 @@ jobs:
         python travis/script-syntax.py --ext=rb --cmd="ruby -c"
   check-pr:
     runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
     steps:
     - name: Check that PR is based on develop branch
-      if: github.event_name == 'pull_request'
       env:
         BASE_BRANCH: ${{ github.base_ref }}
       run: |