diff --git a/export_mailman2_settings.py b/export_mailman2_settings.py
index 55842a9..2f13b0c 100644
--- a/export_mailman2_settings.py
+++ b/export_mailman2_settings.py
@@ -36,7 +36,9 @@ EXCLUDES = set((
     'autoresponse_request_text_upload',
     'bounce_notify_owner_on_bounce_increment',
     'digestable',
-    'digest_is_default'
+    'digest_is_default',
+    'mime_is_default_digest',
+    'digest_size_threshhold'
 ))