diff --git a/control/frontend/src/ts/types.ts b/control/frontend/src/ts/types.ts
index 91a3391..aabf2ac 100644
--- a/control/frontend/src/ts/types.ts
+++ b/control/frontend/src/ts/types.ts
@@ -29,7 +29,7 @@ export const supported_file_type_icon: Record<string, typeof X> = {
 }
 
 export type FolderElement = {
-    id?: string;
+    id: string;
     hash: string;
     name: string;
     type: string;