1diff --git i/tests/test_asyncio.py w/tests/test_asyncio.py
2index 39d9e1a..05b7e6f 100644
3--- i/tests/test_asyncio.py
4+++ w/tests/test_asyncio.py
5@@ -69,7 +69,7 @@ class AsyncioTests(test_utils.TestCase):
6 def step_future():
7 future = asyncio.Future()
8 self.loop.call_soon(future.set_result, "asyncio.Future")
9- return (yield from future)
10+ return (yield From(future))
11
12 # test in release mode
13 trollius.coroutines._DEBUG = False