diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 75af29b..3404b8a 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -668,6 +668,7 @@ class Point(namedtuple('_Point', ['x', 'y'])):
         a.w = 5
         self.assertEqual(a.__dict__, {'w': 5})
 
+    @support.cpython_only
     def test_field_descriptor(self):
         Point = namedtuple('Point', 'x y')
         p = Point(11, 22)