diff --git a/examples/org-roam/publish.el b/examples/org-roam/publish.el
index e77f7df..3ec8b56 100644
--- a/examples/org-roam/publish.el
+++ b/examples/org-roam/publish.el
@@ -13,6 +13,7 @@
 (let* ((site (weblorg-site
               :default-route "org-nodes"
               :theme nil))
+       ;; We only want to publish org-roam nodes with the public filetag.
        (org-roam-nodes-filter (lambda (node)
                                 (member "public" (org-roam-node-tags node)))))
   (weblorg-route