2 files changed, 2 insertions, 3 deletions

diff --git a/setup.py b/setup.py
index 8a50fb3a4..e42fc776b 100644
--- a/setup.py
+++ b/setup.py
@@ -107,5 +107,4 @@ case second `m'.  Any other spelling is incorrect.""",
         'zope.event',
         'zope.interface',
         ],
-    test_suite = 'nose2.collector.collector',
     )
diff --git a/src/mailman/testing/nose.py b/src/mailman/testing/nose.py
index e7957e57f..1e96e643f 100644
--- a/src/mailman/testing/nose.py
+++ b/src/mailman/testing/nose.py
@@ -25,17 +25,17 @@ __all__ = [
 import os
 import re
 import doctest
-import mailman
 import importlib
 
 from mailman.testing.documentation import setup, teardown
 from mailman.testing.layers import ConfigLayer, MockAndMonkeyLayer, SMTPLayer
 from nose2.events import Plugin
+from pkg_resources import resource_filename
 
 
 DOT = '.'
 FLAGS = doctest.ELLIPSIS | doctest.NORMALIZE_WHITESPACE | doctest.REPORT_NDIFF
-TOPDIR = os.path.dirname(mailman.__file__)
+TOPDIR = os.path.dirname(resource_filename('mailman', '__init__.py'))