1 files changed, 4 insertions, 0 deletions

diff --git a/src/mailman/interfaces/archiver.py b/src/mailman/interfaces/archiver.py
index 1aa4574e7..b17e43d6e 100644
--- a/src/mailman/interfaces/archiver.py
+++ b/src/mailman/interfaces/archiver.py
@@ -53,6 +53,8 @@ class IArchiver(Interface):
     def list_url(mlist):
         """Return the url to the top of the list's archive.
 
+        If the archiver is not web-accessible, return None.
+
         :param mlist: The IMailingList object.
         :returns: The url string.
         """
@@ -63,6 +65,8 @@ class IArchiver(Interface):
         This url points directly to the message in the archive.  This method
         only calculates the url, it does not actually archive the message.
 
+        If the archiver is not web-accessible, return None.
+
         :param mlist: The IMailingList object.
         :param msg: The message object.
         :returns: The url string or None if the message's archive url cannot