diff --git a/oml/directory.py b/oml/directory.py
index c0ad96a..e56cff1 100644
--- a/oml/directory.py
+++ b/oml/directory.py
@@ -17,7 +17,10 @@ base = settings.server['directory_service']
 def get(vk):
     id = vk.to_ascii(encoding='base64')
     url ='%s/%s' % (base, id)
-    r = requests.get(url)
+    headers = {
+        'User-Agent': settings.USER_AGENT
+    }
+    r = requests.get(url, headers=headers)
     sig = r.headers.get('X-Ed25519-Signature')
     data = r.content
     if sig and data:
@@ -37,6 +40,7 @@ def put(sk, data):
     sig = sk.sign(data, encoding='base64')
     url ='%s/%s' % (base, id)
     headers = {
+        'User-Agent': settings.USER_AGENT,
         'X-Ed25519-Signature': sig
     }
     try:
diff --git a/oml/item/models.py b/oml/item/models.py
index a72b1e3..2314916 100644
--- a/oml/item/models.py
+++ b/oml/item/models.py
@@ -303,7 +303,6 @@ class Item(db.Model):
         cover = None
         if 'cover' in self.meta and self.meta['cover']:
             cover = ox.cache.read_url(self.meta['cover'])
-            #covers[self.id] = requests.get(self.meta['cover']).content
             if cover:
                 icons[key] = cover
                 self.info['coverRatio'] = get_ratio(cover)
diff --git a/oml/nodes.py b/oml/nodes.py
index 44c56e0..02f38b8 100644
--- a/oml/nodes.py
+++ b/oml/nodes.py
@@ -295,11 +295,6 @@ class Node(Thread):
         }
         t1 = datetime.utcnow()
         logger.debug('download %s', url)
-        '''
-        r = requests.get(url, headers=headers)
-        if r.status_code == 200:
-            content = r.content
-        '''
         self._opener.addheaders = zip(headers.keys(), headers.values())
         r = self._opener.open(url, timeout=self.TIMEOUT*2)
         if r.getcode() == 200: