diff --git a/packages/frontend/src/world/room/utility.ts b/packages/frontend/src/world/room/utility.ts
index 118acc59e0..dbf3b9ade3 100644
--- a/packages/frontend/src/world/room/utility.ts
+++ b/packages/frontend/src/world/room/utility.ts
@@ -23,6 +23,7 @@ export function getLightRangeFactorByGraphicsQuality(quality: number) {
 	}
 }
 
+// TODO: addFileみたいなメソッドを持つクラス化して引き回させた方が便利かもしれない
 export type RoomAttachments = {
 	files: Misskey.entities.DriveFile[];
 };