diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 18abb9d6..f913b9b6 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -13,7 +13,7 @@ jobs:
       (
         github.event_name == 'issue_comment' &&
         github.event.issue.pull_request != '' &&
-        contains(github.event.comment.body, '/benchmark')
+        (startsWith(github.event.comment.body, '/benchmark'))
       )
     permissions:
       pull-requests: write