1 files changed, 8 insertions, 2 deletions

diff --git a/src/mailman/rest/addresses.py b/src/mailman/rest/addresses.py
index 5d479d9cb..d0b0fa1c9 100644
--- a/src/mailman/rest/addresses.py
+++ b/src/mailman/rest/addresses.py
@@ -137,6 +137,11 @@ class UserAddresses(_AddressBase):
 
 
 
+def membership_key(member):
+    # Sort first by mailing list, then by address, then by role.
+    return member.mailing_list, member.address.email, int(member.role)
+
+
 class AddressMemberships(MemberCollection):
     """All the memberships of a particular email address."""
 
@@ -157,5 +162,6 @@ class AddressMemberships(MemberCollection):
         user = getUtility(IUserManager).get_user(self._address.email)
         if user is None:
             return []
-        return [member for member in user.memberships.members
-                if member.address == self._address]
+        return sorted((member for member in user.memberships.members
+                       if member.address == self._address),
+                      key=membership_key)