diff -r b74897b69184 Doc/library/asyncio-eventloop.rst
--- a/Doc/library/asyncio-eventloop.rst	Wed Nov 02 20:33:07 2016 -0400
+++ b/Doc/library/asyncio-eventloop.rst	Wed Nov 02 20:29:32 2016 -0700
@@ -381,6 +381,10 @@
    establish the connection in the background.  When successful, the
    coroutine returns a ``(transport, protocol)`` pair.
 
+   *path* is the name of UNIX domain socket, and it is required unless *sock*
+   parameter is specified.  Abstract UNIX sockets, :class:`str`, and
+   :class:`bytes` paths are supported.
+
    See the :meth:`AbstractEventLoop.create_connection` method for parameters.
 
    Availability: UNIX.