diff --git a/public-legacy/forum/posting.php b/public-legacy/forum/posting.php
index 7f8d315..9904fbb 100644
--- a/public-legacy/forum/posting.php
+++ b/public-legacy/forum/posting.php
@@ -296,7 +296,7 @@ try {
 }
 
 Template::render('forum.posting', [
-    'posting_breadcrumbs' => $forumCategories->getCategoryAncestry($categoryInfo),
+    'posting_breadcrumbs' => iterator_to_array($forumCategories->getCategoryAncestry($categoryInfo)),
     'global_accent_colour' => $forumCategories->getCategoryColour($categoryInfo),
     'posting_user' => $currentUser,
     'posting_user_colour' => $usersCtx->getUserColour($currentUser),