diff --git a/Lib/test/test_py3kwarn.py b/Lib/test/test_py3kwarn.py
index 6d3d962..32c36a9 100644
--- a/Lib/test/test_py3kwarn.py
+++ b/Lib/test/test_py3kwarn.py
@@ -323,7 +323,13 @@
                                      'IOCTL', 'jpeg', 'panel', 'panelparser',
                                      'readcd', 'SV', 'torgb', 'WAIT'),
                           'darwin' : ('autoGIL', 'Carbon', 'OSATerminology',
-                                      'icglue', 'Nav', 'MacOS', 'aepack',
+                                      'icglue', 'Nav',
+                                      # MacOS should (and does) give a Py3kWarning, but one of the
+                                      # earlier tests already imports the MacOS extension which causes
+                                      # this test to fail. Disabling the test for 'MacOS' avoids this
+                                      # spurious test failure.
+                                      #'MacOS',
+                                      'aepack',
                                       'aetools', 'aetypes', 'applesingle',
                                       'appletrawmain', 'appletrunner',
                                       'argvemulator', 'bgenlocations',