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diff --git a/test/bytecode_3.7_run/04_def_annotate.pyc b/test/bytecode_3.7_run/04_def_annotate.pyc
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diff --git a/test/simple_source/bug31/04_def_annotate.py b/test/simple_source/bug31/04_def_annotate.py
index 4281a809..de80dd1a 100644
--- a/test/simple_source/bug31/04_def_annotate.py
+++ b/test/simple_source/bug31/04_def_annotate.py
@@ -47,6 +47,12 @@ def test14(*args, name: int=1, qname):
 def test15(*args, name='S', fname, qname=4):
     return args, name, fname, qname
 
+# From 3.4 /asyncio/streams.py open_connection
+_DEFAULT_LIMIT = 5
+def test16(host=None, port=None, *,
+           loop=None, limit=_DEFAULT_LIMIT, **kwds):
+    return host, port, loop, limit, kwds
+
 # Python 3.1 _pyio.py uses the  -> "IOBase" annotation
 def o(f, mode = "r", buffering = None) -> "IOBase":
     return (f, mode, buffering)
@@ -122,6 +128,10 @@ def ann2(args_1, b: int = 5, **kwargs: float) -> float:
     assert ann2.__annotations__['return'] == float
     assert b == 5
 
+class TestSignatureObject():
+    def test_signature_on_wkwonly(self):
+        def test(x:int=55, *args: (int, str), c='test', a:float, kwargs:str="S", **b: int) -> int:
+            pass
 
 assert test1(1, 5) == (1, 5, 4, {})
 assert test1(1, 5, 6, foo='bar') == (1, 5, 6, {'foo': 'bar'})
@@ -139,3 +149,4 @@ ann2(1)
 
 assert test12(1, 2, 3, name='hi') == (1, (2, 3)), "a, *args, name"
 assert test13(1, 2, 3, name='hi') == ((1, 2, 3), 'hi'), "*args, name"
+assert test16('localhost', loop=2, limit=3, a='b') == ('localhost', None, 2, 3, {'a': 'b'})