diff --git a/Lib/test/test_richcmp.py b/Lib/test/test_richcmp.py
index 58729a9fe..27ef92c3e 100644
--- a/Lib/test/test_richcmp.py
+++ b/Lib/test/test_richcmp.py
@@ -253,6 +253,8 @@ class MiscTest(unittest.TestCase):
         self.assertTrue(a != b)
         self.assertTrue(a < b)
 
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
     def test_exception_message(self):
         class Spam:
             pass