diff -r fb672afd0151 Lib/test/test_coroutines.py
--- a/Lib/test/test_coroutines.py	Mon Oct 31 20:15:48 2016 +0200
+++ b/Lib/test/test_coroutines.py	Fri Nov 04 12:54:07 2016 +0200
@@ -1665,6 +1665,29 @@ class CoroutineTest(unittest.TestCase):
                 warnings.simplefilter("error")
                 run_async(foo())
 
+    def test_for_tuple(self):
+        class Done(Exception): pass
+
+        class AIter(tuple):
+            i = 0
+            def __aiter__(self):
+                return self
+            async def __anext__(self):
+                if self.i >= len(self):
+                    raise StopAsyncIteration
+                self.i += 1
+                return self[self.i - 1]
+
+        result = []
+        async def foo():
+            async for i in AIter('ab'):
+                result.append(i)
+            raise Done
+
+        with self.assertRaises(Done):
+            foo().send(None)
+        self.assertEqual(result, ['a', 'b'])
+
     def test_comp_1(self):
         async def f(i):
             return i