Index: src/routes/posts.js
===================================================================
--- src/routes/posts.js	(revision de3d24b1b5f65ddc12b43239cbde13c70c92dfe0)
+++ src/routes/posts.js	(revision c73ac647e83e17754d2b5700371479eea7d031fa)
@@ -806,5 +806,5 @@
   try {
     const _apBase = (process.env.PUBLIC_BASE_URL || `${req.protocol}://${req.get('host')}`).replace(/\/+$/, '');
-    fediverse = ActivityPubService.getInteractions(post.id, _apBase);
+    fediverse = ActivityPubService.getInteractions(post.id, _apBase, site);
   } catch { /* non-fatal */ }
   // Owner/admin of this site may reply back to a fediverse interaction.