diff --git a/requirements/development.txt b/requirements/development.txt
index 240e0e2..42e722f 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -1 +1,2 @@
+-r requirements.txt
 setuptools-git
diff --git a/shortenit/web.py b/shortenit/web.py
index 637c4da..6b62bee 100644
--- a/shortenit/web.py
+++ b/shortenit/web.py
@@ -3,7 +3,7 @@ import logging
 import aiohttp_jinja2
 import jinja2
 
-import trafaret as t
+import trafaret
 
 from aiohttp import web
 from pathlib import Path
@@ -40,6 +40,8 @@ class Web:
                             name='index')
         self.router.add_post('/shortenit', self.handler.shortenit,
                              name='shortenit')
+        self.router.add_put('/pointers/favicon.ico', self.handler.favicon,
+                             name='favicon')
         self.router.add_get('/{identifier}', self.handler.redirect,
                             name='redirect')
 
@@ -50,9 +52,9 @@ class SiteHandler:
         self.database = database
         self.shorten_url = shorten_url
         self.lenghten_url = lenghten_url
-        self.shortenit_load_format = t.Dict({
-            t.Key('url'): t.URL,
-            t.Key('timestamp'): t.Int
+        self.shortenit_load_format = trafaret.Dict({
+            trafaret.Key('url'): trafaret.URL,
+            trafaret.Key('timestamp'): trafaret.Int
             })
 
     async def shortenit(self, request):
@@ -60,9 +62,15 @@ class SiteHandler:
         self.logger.debug(data)
         try:
             data = self.shortenit_load_format(data)
-        except t.DataError:
-            raise web.HTTPBadRequest('URL is not valid')
-        short_url = self.shorten_url(self.database, data['url'], data['timestamp'])
+        except Exception as e:
+            self.logger.debug(e)
+            raise web.HTTPBadRequest()
+        try:
+            short_url = self.shorten_url(
+                self.database, data['url'], data['timestamp'])
+        except KeyError as e:
+            self.logger.debug(e)
+            raise web.HTTPBadRequest()
         self.logger.debug(short_url)
         return web.json_response({"url": short_url})
 
@@ -71,7 +79,10 @@ class SiteHandler:
         url = self.lenghten_url(self.database, identifier)
         if not url:
             raise web.HTTPNotFound()
-        return web.HTTPFound(location=url)
+        raise web.HTTPFound(location=url)
+
+    async def favicon(self, request):
+        raise web.Response(text={})
 
     @aiohttp_jinja2.template('index.html')
     async def index(self, request):