diff --git a/.github/workflows/dev-preview.yml b/.github/workflows/dev-preview.yml
index a7d58069..6d5a5b6c 100644
--- a/.github/workflows/dev-preview.yml
+++ b/.github/workflows/dev-preview.yml
@@ -1,8 +1,11 @@
 name: Build and Push Dev Preview Image
 on:
+  # github treats issue comments and PR comments as the same.
+  # Further down there's a bit that restricts the job itself to a PR
+  # comment with a specific body
   issue_comment:
   types:
-    - created
+    - 'created'
 
 jobs:
   long-job: