diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a3d9a1caa..ec38ad9bdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@
 ### Bugfixes
 - クライアント: テーマの管理が行えない問題を修正
 - API: アプリケーション通知が取得できない問題を修正
+- ActivityPub: not reacted な Undo.Like がinboxに滞留するのを修正
 
 ## 12.92.0 (2021/10/16)
 
diff --git a/src/remote/activitypub/kernel/undo/like.ts b/src/remote/activitypub/kernel/undo/like.ts
index 7f821cada0..107d3053e3 100644
--- a/src/remote/activitypub/kernel/undo/like.ts
+++ b/src/remote/activitypub/kernel/undo/like.ts
@@ -12,6 +12,10 @@ export default async (actor: IRemoteUser, activity: ILike) => {
 	const note = await fetchNote(targetUri);
 	if (!note) return `skip: target note not found ${targetUri}`;
 
-	await deleteReaction(actor, note);
+	await deleteReaction(actor, note).catch(e => {
+		if (e.id === '60527ec9-b4cb-4a88-a6bd-32d3ad26817d') return;
+		throw e;
+	});
+
 	return `ok`;
 };