diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index e955a23cee..77df06116c 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -1,12 +1,12 @@
-on: pull_request
+on: [pull_request]
 name: benchmark pull requests
 jobs:
   runBenchmark:
     name: run benchmark
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
-    - name: run benchmark
-      uses: matchai/criterion-compare-action@master
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - uses: actions/checkout@master
+      - name: run benchmark
+        uses: matchai/criterion-compare-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}