diff --git a/docs/source/custom.rst b/docs/source/custom.rst
index 88f5eaf2..35c7be24 100644
--- a/docs/source/custom.rst
+++ b/docs/source/custom.rst
@@ -10,52 +10,7 @@ Sometimes, you want to integrate Gunicorn with your WSGI application. In this
 case, you can inherit from :class:`gunicorn.app.base.BaseApplication`.
 
 Here is a small example where we create a very small WSGI app and load it with a
-custom Application::
+custom Application:
 
-    #!/usr/bin/env python
-    import gunicorn.app.base
-
-    def handler_app(environ, start_response):
-        response_body = 'Works fine'
-        status = '200 OK'
-
-        response_headers = [
-            ('Content-Type', 'text/plain'),
-            ('Content-Length', str(len(response_body)))
-        ]
-
-        start_response(status, response_headers)
-
-        return [response_body]
-
-    class StandaloneApplication(gunicorn.app.base.BaseApplication):
-        def __init__(self, app, options=None):
-            self.options = dict(options or {})
-            self.application = app
-            super(StandaloneApplication, self).__init__()
-
-        def load_config(self):
-            tmp_config = map(
-                lambda item: (item[0].lower(), item[1]),
-                self.options.iteritems()
-            )
-
-            config = dict(
-                (key, value)
-                for key, value in tmp_config
-                if key in self.cfg.settings and value is not None
-            )
-
-            for key, value in config.iteritems():
-                self.cfg.set(key.lower(), value)
-
-        def load(self):
-            return self.application
-
-    if __name__ == '__main__':
-        options = {
-            'bind': '%s:%s' % ('127.0.0.1', '8080'),
-            'workers': 4,
-            # 'pidfile': pidfile,
-        }
-        StandaloneApplication(handler_app, options).run()
+.. literalinclude:: ../../examples/standalone_app.py
+    :lines: 11-60
diff --git a/examples/standalone_app.py b/examples/standalone_app.py
index a9a7267a..07c98956 100644
--- a/examples/standalone_app.py
+++ b/examples/standalone_app.py
@@ -8,21 +8,25 @@
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
 
-import gunicorn
-import gunicorn.app.base
+from __future__ import unicode_literals
+
 import multiprocessing
 
+import gunicorn.app.base
+
+from gunicorn.six import iteritems
+
+
 def number_of_workers():
     return (multiprocessing.cpu_count() * 2) + 1
 
 
 def handler_app(environ, start_response):
-    response_body = 'Works fine'
+    response_body = b'Works fine'
     status = '200 OK'
 
     response_headers = [
         ('Content-Type', 'text/plain'),
-        ('Content-Lenfth', str(len(response_body))),
     ]
 
     start_response(status, response_headers)
@@ -31,24 +35,16 @@ def handler_app(environ, start_response):
 
 
 class StandaloneApplication(gunicorn.app.base.BaseApplication):
+
     def __init__(self, app, options=None):
-        self.options = dict(options or {})
+        self.options = options or {}
         self.application = app
         super(StandaloneApplication, self).__init__()
 
     def load_config(self):
-        tmp_config = map(
-            lambda item: (item[0].lower(), item[1]),
-            self.options.iteritems()
-        )
-
-        config = dict(
-            (key, value)
-            for key, value in tmp_config
-            if key in self.cfg.settings and value is not None
-        )
-
-        for key, value in config.iteritems():
+        config = dict([(key, value) for key, value in iteritems(self.options)
+                       if key in self.cfg.settings and value is not None])
+        for key, value in iteritems(config):
             self.cfg.set(key.lower(), value)
 
     def load(self):