diff --git a/bin/www b/bin/www
index 4174cd5..7bf22e7 100644
--- a/bin/www
+++ b/bin/www
@@ -15,7 +15,7 @@ var http = require('http');
  * Get port from environment and store in Express.
  */
 
-var port = normalizePort(process.env.PORT || '1001');
+var port = normalizePort(process.env.PORT || '999');
 app.set('port', port);
 
 /**
diff --git a/routes/photo.js b/routes/photo.js
index 2cc7390..fad16fc 100644
--- a/routes/photo.js
+++ b/routes/photo.js
@@ -35,7 +35,8 @@ router.get('/:photo', function(req, res, next) {
             return;
             break;
         case 'download':
-            if (!isAjax) {
+            var ua = req.get('User-Agent');
+            if (!isAjax && !/(spider|bot)/ig.test(ua)) {
                 var sql = `update bing as a join (select downloads,id from bing WHERE qiniu_url='${photo}') as b on a.id=b.id set a.downloads=(b.downloads+1)`;
                 db.commonQuery(sql, function(rows) {
                     res.set({
@@ -44,7 +45,7 @@ router.get('/:photo', function(req, res, next) {
                     });
                     request.get(`http://images.ioliu.cn/bing/${photo}_1920x1080.jpg`)
                         .set({
-                            'User-Agent': req.get('User-Agent')
+                            'User-Agent': ua
                         }).pipe(res);
                 });
             } else {