diff --git a/application/admin/controller/Addon.php b/application/admin/controller/Addon.php
index 4d4789b0..ca233d37 100644
--- a/application/admin/controller/Addon.php
+++ b/application/admin/controller/Addon.php
@@ -346,7 +346,7 @@ class Addon extends Backend
             }
             $v['url'] = addon_url($v['name']);
             $v['url'] = str_replace($this->request->server('SCRIPT_NAME'), '', $v['url']);
-            $v['createtime'] = filemtime(ADDON_PATH . $v['name']);
+            $v['createtime'] = filemtime(ADDON_PATH . strtolower($v['name']));
             if ($filter && isset($filter['category_id']) && is_numeric($filter['category_id']) && $filter['category_id'] != $v['category_id']) {
                 continue;
             }