diff --git a/web/settings/relationship/add-users-list.react.js b/web/settings/relationship/add-users-list.react.js
--- a/web/settings/relationship/add-users-list.react.js
+++ b/web/settings/relationship/add-users-list.react.js
@@ -43,7 +43,6 @@
 
   const searchTextPresent = searchText.length > 0;
   const userInfos = useSelector(state => state.userStore.userInfos);
-  // eslint-disable-next-line no-unused-vars
   const mergedUserInfos = React.useMemo(() => {
     const mergedInfos = {};
 
@@ -69,6 +68,17 @@
     userStoreSearchResults,
   ]);
 
+  // eslint-disable-next-line no-unused-vars
+  const sortedUsers = React.useMemo(() => {
+    const users = [];
+    for (const userID in mergedUserInfos) {
+      users.push(mergedUserInfos[userID]);
+    }
+    return users.sort((user1, user2) =>
+      user1.username.localeCompare(user2.username),
+    );
+  }, [mergedUserInfos]);
+
   return null;
 }