diff --git a/public-legacy/forum/topic.php b/public-legacy/forum/topic.php
index b722fc2..ad204fd 100644
--- a/public-legacy/forum/topic.php
+++ b/public-legacy/forum/topic.php
@@ -291,7 +291,11 @@ $postInfos = $forumPosts->getPosts(
 if(empty($postInfos))
     Template::throwError(404);
 
-$originalPostInfo = $forumPosts->getPost(topicInfo: $topicInfo);
+try {
+    $originalPostInfo = $forumPosts->getPost(topicInfo: $topicInfo);
+} catch(RuntimeException $ex) {
+    Template::throwError(404);
+}
 
 $posts = [];