diff --git a/mailman_sync.py b/mailman_sync.py
index c599f90..18c0113 100755
--- a/mailman_sync.py
+++ b/mailman_sync.py
@@ -118,7 +118,7 @@ def sync_moderators(
     for member in members_to_remove:
         print(f"Removing {member} as moderator from list {list}")
         if not dry_run:
-            list.remove_moderator(member.address)
+            list.remove_moderator(member.address.email)
 
 
 def update_cloudflare_lists(