diff --git a/packages/backend/src/misc/is-renote.ts b/packages/backend/src/misc/is-renote.ts
index 48f821806c..f4bb329d80 100644
--- a/packages/backend/src/misc/is-renote.ts
+++ b/packages/backend/src/misc/is-renote.ts
@@ -6,6 +6,8 @@
 import type { MiNote } from '@/models/Note.js';
 import type { Packed } from '@/misc/json-schema.js';
 
+// NoteEntityService.isPureRenote とよしなにリンク
+
 type Renote =
 	MiNote & {
 		renoteId: NonNullable<MiNote['renoteId']>