diff --git a/.github/workflows/message.yml b/.github/workflows/message.yml
index 2d07b6d8..108db232 100644
--- a/.github/workflows/message.yml
+++ b/.github/workflows/message.yml
@@ -9,6 +9,9 @@ on:
 jobs:
   validate:
     runs-on: ubuntu-latest
+    # GitHub required checks are shared between PRs and the Merge Queue.
+    # Since there is no PR title on Merge Queue, we need to trigger and
+    # skip this test for Merge Queue to succeed.
     if: github.event_name == 'pull_request' 
     steps:
       - name: Checkout