diff --git a/web/modals/threads/members/members-modal.react.js b/web/modals/threads/members/members-modal.react.js
--- a/web/modals/threads/members/members-modal.react.js
+++ b/web/modals/threads/members/members-modal.react.js
@@ -6,12 +6,12 @@
 import { threadInfoSelector } from 'lib/selectors/thread-selectors.js';
 import { userStoreSearchIndex } from 'lib/selectors/user-selectors.js';
 import {
-  memberHasAdminPowers,
-  memberIsAdmin,
+  roleIsAdminRole,
   threadHasPermission,
 } from 'lib/shared/thread-utils.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import { type RelativeMemberInfo } from 'lib/types/thread-types.js';
+import { useRolesFromCommunityThreadInfo } from 'lib/utils/role-utils.js';
 
 import { AddMembersModal } from './add-members-modal.react.js';
 import ThreadMembersList from './members-list.react.js';
@@ -47,13 +47,14 @@
       ),
     [searchText.length, threadMembersNotFiltered, userIDs],
   );
+
+  const roles = useRolesFromCommunityThreadInfo(threadInfo, allMembers);
   const adminMembers = React.useMemo(
     () =>
-      allMembers.filter(
-        (member: RelativeMemberInfo) =>
-          memberIsAdmin(member, threadInfo) || memberHasAdminPowers(member),
+      allMembers.filter((member: RelativeMemberInfo) =>
+        roleIsAdminRole(roles.get(member.id)),
       ),
-    [allMembers, threadInfo],
+    [allMembers, roles],
   );
 
   const allUsersTab = React.useMemo(