diff --git a/src/components/Post/Embed/StandardSiteEmbed/index.tsx b/src/components/Post/Embed/StandardSiteEmbed/index.tsx
index 8274ba20f1..9eacb9aafd 100644
--- a/src/components/Post/Embed/StandardSiteEmbed/index.tsx
+++ b/src/components/Post/Embed/StandardSiteEmbed/index.tsx
@@ -74,6 +74,8 @@ export const StandardSiteEmbed = ({
     }
   }
 
+  // Embeds are expected to associate with at most one publication; if multiple
+  // refs are ever present, the byline silently uses the first one.
   const publicationUri = view.associatedRefs?.find(
     ref => new AtUri(ref.uri).collection === 'site.standard.publication',
   )?.uri