diff --git a/web/admin/md_check.php b/web/admin/md_check.php
index 55535f4..7686c16 100644
--- a/web/admin/md_check.php
+++ b/web/admin/md_check.php
@@ -5,5 +5,11 @@ function MarkdownEntities($markdown) {
     $markdown = preg_replace_callback('/\$\$(.*?)\$\$/s', function ($matches) {
         return str_replace(['<', '>'], ['\\lt', '\\gt'], $matches[0]);
     }, $markdown);
+    $markdown = preg_replace_callback('/```(.*?)```/s', function ($matches) {
+        return str_replace(['<', '>'], ['&lt;', '&gt;'], $matches[0]);
+    }, $markdown);
+    $markdown = preg_replace_callback('/`(.*?)`/s', function ($matches) {
+        return str_replace(['<', '>'], ['&lt;', '&gt;'], $matches[0]);
+    }, $markdown);
     return $markdown;
 }