diff --git a/misuzu.php b/misuzu.php
index 2670deb9..018e4bed 100644
--- a/misuzu.php
+++ b/misuzu.php
@@ -82,7 +82,6 @@ require_once 'src/Users/avatar.php';
 require_once 'src/Users/background.php';
 require_once 'src/Users/role.php';
 require_once 'src/Users/user_legacy.php';
-require_once 'src/Users/warning.php';
 
 $dbConfig = parse_ini_file(MSZ_ROOT . '/config/config.ini', true, INI_SCANNER_TYPED);
 
diff --git a/src/Users/warning.php b/src/Users/warning.php
deleted file mode 100644
index 7d7e8063..00000000
--- a/src/Users/warning.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-define('MSZ_WARN_SILENCE', 2);
-define('MSZ_WARN_BAN', 3);
-
-define('MSZ_WARN_TYPES_HAS_DURATION', [MSZ_WARN_SILENCE, MSZ_WARN_BAN]);
-
-function user_warning_check_expiration(int $userId, int $type): int {
-    if($userId < 1 || !in_array($type, MSZ_WARN_TYPES_HAS_DURATION, true))
-        return 0;
-
-    static $memo = [];
-    $memoId = "{$userId}-{$type}";
-
-    if(array_key_exists($memoId, $memo))
-        return $memo[$memoId];
-
-    $getExpiration = \Misuzu\DB::prepare('
-        SELECT `warning_duration`
-        FROM `msz_user_warnings`
-        WHERE `warning_type` = :type
-        AND `user_id` = :user
-        AND `warning_duration` IS NOT NULL
-        AND `warning_duration` >= NOW()
-        ORDER BY `warning_duration` DESC
-        LIMIT 1
-    ');
-    $getExpiration->bind('type', $type);
-    $getExpiration->bind('user', $userId);
-    $expiration = $getExpiration->fetchColumn(0, '');
-
-    return $memo[$memoId] = (empty($expiration) ? 0 : strtotime($expiration));
-}