2 files changed, 3 insertions, 1 deletions

diff --git a/src/mailman/handlers/tests/test_rfc_2369.py b/src/mailman/handlers/tests/test_rfc_2369.py
index dc622e528..5eac70244 100644
--- a/src/mailman/handlers/tests/test_rfc_2369.py
+++ b/src/mailman/handlers/tests/test_rfc_2369.py
@@ -34,6 +34,7 @@ from urllib.parse import urljoin
 from zope.interface import implementer
 
 
+
 @implementer(IArchiver)
 class DummyArchiver:
     """An example archiver which does nothing but return URLs."""
@@ -55,6 +56,7 @@ class DummyArchiver:
         return None
 
 
+
 class TestRFC2369(unittest.TestCase):
     """Test the rfc_2369 handler."""
 
diff --git a/src/mailman/interfaces/archiver.py b/src/mailman/interfaces/archiver.py
index b17e43d6e..044ec5056 100644
--- a/src/mailman/interfaces/archiver.py
+++ b/src/mailman/interfaces/archiver.py
@@ -56,7 +56,7 @@ class IArchiver(Interface):
         If the archiver is not web-accessible, return None.
 
         :param mlist: The IMailingList object.
-        :returns: The url string.
+        :returns: The url string or None.
         """
 
     def permalink(mlist, msg):