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-rw-r--r--src/mailman/rest/lists.py7
1 files changed, 3 insertions, 4 deletions
diff --git a/src/mailman/rest/lists.py b/src/mailman/rest/lists.py
index a4d2da56a..a2b9b4a9c 100644
--- a/src/mailman/rest/lists.py
+++ b/src/mailman/rest/lists.py
@@ -151,12 +151,11 @@ class AList(_ListBase):
"""Return a single member representation."""
if self._mlist is None:
return NotFound(), []
- members = getUtility(ISubscriptionService).find_members(
+ member = getUtility(ISubscriptionService).find_member(
email, self._mlist.list_id, role)
- if len(members) == 0:
+ if member is None:
return NotFound(), []
- assert len(members) == 1, 'Too many matches'
- return AMember(request.context['api_version'], members[0].member_id)
+ return AMember(request.context['api_version'], member.member_id)
@child(roster_matcher)
def roster(self, request, segments, role):