diff --git a/ext/forum/theme.php b/ext/forum/theme.php
index f3c316b2..e83ded8d 100644
--- a/ext/forum/theme.php
+++ b/ext/forum/theme.php
@@ -101,7 +101,7 @@ class ForumTheme extends Themelet
 
         foreach ($posts as $post) {
             $current_post++;
-            $message = $post["message"];
+            $message = mb_convert_encoding($post["message"], "UTF-8", "HTML-ENTITIES");
 
             $tfe = new TextFormattingEvent($message);
             send_event($tfe);