diff --git a/lib/utils/role-utils.js b/lib/utils/role-utils.js
--- a/lib/utils/role-utils.js
+++ b/lib/utils/role-utils.js
@@ -14,7 +14,6 @@
   type ThreadRolePermissionsBlob,
   type UserSurfacedPermission,
 } from '../types/thread-permission-types.js';
-import type { LegacyRoleInfo } from '../types/thread-types';
 import { threadTypes } from '../types/thread-types-enum.js';
 
 function constructRoleDeletionMessagePrompt(
@@ -59,7 +58,7 @@
 function useRolesFromCommunityThreadInfo(
   threadInfo: ThreadInfo,
   memberInfos: $ReadOnlyArray<RelativeMemberInfo>,
-): $ReadOnlyMap<string, ?LegacyRoleInfo | ?MinimallyEncodedRoleInfo> {
+): $ReadOnlyMap<string, ?MinimallyEncodedRoleInfo> {
   // Our in-code system has chat-specific roles, while the
   // user-surfaced system has roles only for communities. We retrieve roles
   // from the top-level community thread for accuracy, with a rare fallback
@@ -74,10 +73,7 @@
     community ? threadInfoSelector(state)[community] : null,
   );
   const topMostThreadInfo = communityThreadInfo || threadInfo;
-  const roleMap = new Map<
-    string,
-    ?LegacyRoleInfo | ?MinimallyEncodedRoleInfo,
-  >();
+  const roleMap = new Map<string, ?MinimallyEncodedRoleInfo>();
 
   if (topMostThreadInfo.type === threadTypes.GENESIS) {
     memberInfos.forEach(memberInfo =>