diff --git a/examples/run_in_thread.py b/examples/run_in_thread.py
index 3234481..5a704dc 100644
--- a/examples/run_in_thread.py
+++ b/examples/run_in_thread.py
@@ -1,15 +1,16 @@
 import asyncio
 
+
 def compute_pi(digits):
     # implementation
     return 3.14
 
 
-async def main():
+async def main(loop):
     digits = await loop.run_in_executor(None, compute_pi, 20000)
     print("pi: %s" % digits)
 
 
 loop = asyncio.get_event_loop()
-loop.run_until_complete(main())
+loop.run_until_complete(main(loop))
 loop.close()
diff --git a/examples/synchronous_client.py b/examples/synchronous_client.py
index 46eb177..bef9576 100644
--- a/examples/synchronous_client.py
+++ b/examples/synchronous_client.py
@@ -19,7 +19,7 @@ def get_encoding(http_response):
 
 
 def get_page(host, port, wait=0):
-    """Get one page suppling `wait` time.
+    """Get one page supplying `wait` time.
 
     The path will be build with: `host:port/wait`
     """
diff --git a/index.rst b/index.rst
index 492872e..c003603 100644
--- a/index.rst
+++ b/index.rst
@@ -3,7 +3,7 @@ Asyncio Documentation
 +++++++++++++++++++++
 
 Chapter 1: First steps with asyncio
-====================================
+===================================
 
 .. toctree::
    :maxdepth: 2
@@ -18,7 +18,7 @@ Chapter 1: First steps with asyncio
 
 
 Chapter 2: Advanced topics
-===========================
+==========================
 
 .. toctree::
    :maxdepth: 2
@@ -55,7 +55,6 @@ See also
 * `A Web Crawler With asyncio Coroutines
   <http://aosabook.org/en/500L/a-web-crawler-with-asyncio-coroutines.html>`_
   by A. Jesse Jiryu Davis and Guido van Rossum
-* `asyncio.org <http://asyncio.org/>`_
 * `Writing Redis in Python with asyncio: Part 1
   <http://jamesls.com/writing-redis-in-python-with-asyncio-part-1.html>`_
   by James Saryerwinnie
diff --git a/why_asyncio.rst b/why_asyncio.rst
index 695e8ef..8bee9f9 100644
--- a/why_asyncio.rst
+++ b/why_asyncio.rst
@@ -1,6 +1,6 @@
-++++++++++++++++++
+++++++++++++++++
 Why use asyncio?
-++++++++++++++++++
+++++++++++++++++
 
 Why asynchronous programming?
 =============================