diff --git a/wpforo/layouts/2/post.php b/wpforo/layouts/2/post.php
index c357f90..2add197 100644
--- a/wpforo/layouts/2/post.php
+++ b/wpforo/layouts/2/post.php
@@ -39,6 +39,7 @@
                             if (!is_user_logged_in()) {
                                 $forumid = (isset($forum['forumid'])) ? $forum['forumid'] : 0;
                                 $topicid = (isset($topic['topicid'])) ? $topic['topicid'] : 0;
+                                $postid = wpforo_bigintval($post['postid']);
                                 $is_topic = (bool) wpfval($post, 'is_first_post');
                                 $diff = current_time( 'timestamp', 1 ) - strtotime($post['created']);
                                 if (WPF()->perm->forum_can(($is_topic ? 'dt' : 'dr' ), $forumid)