diff --git a/packages/backend/src/core/activitypub/type.ts b/packages/backend/src/core/activitypub/type.ts
index 57dc2fe5f8..79c561d933 100644
--- a/packages/backend/src/core/activitypub/type.ts
+++ b/packages/backend/src/core/activitypub/type.ts
@@ -611,7 +611,7 @@ export function yumeDowncastRemove(object: IObject): IRemove | null {
 export function yumeDowncastLike(object: IObject): ILike | null {
 	if (getApType(object) !== 'Like') return null;
 	const obj = object as ILike;
-	if (!obj.actor || !obj.object || !obj.target) return null;
+	if (!obj.actor || !obj.object) return null;
 	return {
 		...extractMisskeyVendorKeys(object),
 		...extractSafe(object),