1 files changed, 3 insertions, 4 deletions

diff --git a/src/mailman/handlers/file_recipients.py b/src/mailman/handlers/file_recipients.py
index d087ff2bb..750357a90 100644
--- a/src/mailman/handlers/file_recipients.py
+++ b/src/mailman/handlers/file_recipients.py
@@ -17,7 +17,7 @@
 
 """Get the normal delivery recipients from a Sendmail style :include: file."""
 
-from __future__ import absolute_import, unicode_literals
+from __future__ import absolute_import, print_function, unicode_literals
 
 __metaclass__ = type
 __all__ = [
@@ -28,18 +28,17 @@ __all__ = [
 import os
 import errno
 
-from zope.interface import implements
+from zope.interface import implementer
 
 from mailman.core.i18n import _
 from mailman.interfaces.handler import IHandler
 
 
 
+@implementer(IHandler)
 class FileRecipients:
     """Get the normal delivery recipients from an include file."""
 
-    implements(IHandler)
-
     name = 'file-recipients'
     description = _('Get the normal delivery recipients from an include file.')