diff --git a/application/admin/controller/ota/Version.php b/application/admin/controller/ota/Version.php
index f3e9e60..2407088 100644
--- a/application/admin/controller/ota/Version.php
+++ b/application/admin/controller/ota/Version.php
@@ -55,7 +55,7 @@ class Version extends Backend
 
         // 计算 APK 文件信息
         if ($row['apk_file']) {
-            $fullPath = root_path() . 'public' . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR . ltrim($row['apk_file'], '/');
+            $fullPath = ROOT_PATH . 'public' . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR . ltrim($row['apk_file'], '/');
             if (file_exists($fullPath)) {
                 $row->file_size = filesize($fullPath);
                 $row->sha256 = hash_file('sha256', $fullPath);