diff --git a/web/admin/md_check.php b/web/admin/md_check.php
index f9e4e27..6195e52 100644
--- a/web/admin/md_check.php
+++ b/web/admin/md_check.php
@@ -4,7 +4,11 @@ function decodeMarkdownEntities($markdown) {
     // $markdown = preg_replace_callback('/(```.*?```|`[^`]*`)/s', function ($matches) {
     //     return htmlentities($matches[0], ENT_QUOTES, 'UTF-8');
     // }, $markdown);
-
+    // Remove <br /> tags in code blocks
+    $markdown = preg_replace_callback('/(```.*?```|`[^`]*`)/s', function ($matches) {
+        return str_replace('<br />', '', $matches[0]);
+    }, $markdown);
+    
     // Decode HTML entities in inline math and display math
     $markdown = preg_replace_callback('/(\$\$.*?\$\$|\$[^$]*\$)/s', function ($matches) {
         return htmlentities($matches[0], ENT_QUOTES, 'UTF-8');