diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -131,27 +131,16 @@ using the :meth:`sleep` function::
                 break
             await asyncio.sleep(1)
 
     loop = asyncio.get_event_loop()
     # Blocking call which returns when the display_date() coroutine is done
     loop.run_until_complete(display_date(loop))
     loop.close()
 
-The same coroutine implemented using a generator::
-
-    @asyncio.coroutine
-    def display_date(loop):
-        end_time = loop.time() + 5.0
-        while True:
-            print(datetime.datetime.now())
-            if (loop.time() + 1.0) >= end_time:
-                break
-            yield from asyncio.sleep(1)
-
 .. seealso::
 
    The :ref:`display the current date with call_later()
    <asyncio-date-callback>` example uses a callback with the
    :meth:`AbstractEventLoop.call_later` method.
 
 
 Example: Chain coroutines
@@ -304,19 +293,18 @@ Future
 Example: Future with run_until_complete()
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Example combining a :class:`Future` and a :ref:`coroutine function
 <coroutine>`::
 
     import asyncio
 
-    @asyncio.coroutine
-    def slow_operation(future):
-        yield from asyncio.sleep(1)
+    async def slow_operation(future):
+        await asyncio.sleep(1)
         future.set_result('Future is done!')
 
     loop = asyncio.get_event_loop()
     future = asyncio.Future()
     asyncio.ensure_future(slow_operation(future))
     loop.run_until_complete(future)
     print(future.result())
     loop.close()
@@ -336,19 +324,18 @@ Example: Future with run_forever()
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The previous example can be written differently using the
 :meth:`Future.add_done_callback` method to describe explicitly the control
 flow::
 
     import asyncio
 
-    @asyncio.coroutine
-    def slow_operation(future):
-        yield from asyncio.sleep(1)
+    async def slow_operation(future):
+        await asyncio.sleep(1)
         future.set_result('Future is done!')
 
     def got_result(future):
         print(future.result())
         loop.stop()
 
     loop = asyncio.get_event_loop()
     future = asyncio.Future()