diff --git a/web/admin/site/__init__.py b/web/admin/site/__init__.py
index 566135b19..de1ab88aa 100644
--- a/web/admin/site/__init__.py
+++ b/web/admin/site/__init__.py
@@ -8,6 +8,7 @@
 # Author: midoks <midoks@163.com>
 # ---------------------------------------------------------------------------------
 
+import os
 
 from flask import Blueprint, render_template
 from flask import request