diff --git a/common.php b/common.php
index 05b8ac1..994e00f 100644
--- a/common.php
+++ b/common.php
@@ -262,6 +262,10 @@ function main($path)
 
     // Add disk
     if (isset($_GET['AddDisk'])) {
+        if ($_GET['AddDisk']===true) {
+            $tmp = path_format($_SERVER['base_path'] . '/' . $path);
+            return output('Please visit <a href="' . $tmp . '">' . $tmp . '</a>.', 301, [ 'Location' => $tmp ]);
+        }
         if ($_SERVER['admin']) {
             if (!class_exists($_GET['AddDisk'])) require 'disk' . $slash . $_GET['AddDisk'] . '.php';
                 $drive = new $_GET['AddDisk']($_GET['disktag']);