diff --git a/Download.php b/Download.php
index 4ddeb4b..d59e90e 100644
--- a/Download.php
+++ b/Download.php
@@ -8,7 +8,7 @@ session_start();
 
 // 修改这一行设置你的文件下载目录
 // IMPORTANT: Do not delete the following conditional test
-if (strpos($_GET['file'], "../") != false) { // 检查是否有 ../，防止用户构造路径，访问某个他不应该访问的目录
+if (strpos($_GET['file'], "../") !== false) { // 检查是否有 ../，防止用户构造路径，访问某个他不应该访问的目录
     die("Sorry.  Nothing to download.");
 }