diff --git a/framework/core/js/src/admin/components/UserListPage.tsx b/framework/core/js/src/admin/components/UserListPage.tsx
index 7005617a7..8de993a49 100644
--- a/framework/core/js/src/admin/components/UserListPage.tsx
+++ b/framework/core/js/src/admin/components/UserListPage.tsx
@@ -179,7 +179,7 @@ export default class UserListPage extends AdminPage {
    * See `UserListPage.tsx` for examples.
    */
   columns(): ItemList<ColumnData> {
-    const columns = new ItemList();
+    const columns = new ItemList<ColumnData>();
 
     columns.add(
       'id',