diff --git a/src/models/favorite.ts b/src/models/favorite.ts
index b2d2fc93e8..2c07959be7 100644
--- a/src/models/favorite.ts
+++ b/src/models/favorite.ts
@@ -41,6 +41,13 @@ export async function deleteFavorite(favorite: string | mongo.ObjectID | IFavori
 	});
 }
 
+export const packMany = async (
+	favorites: any[],
+	me: any
+) => {
+	return (await Promise.all(favorites.map(f => pack(f, me)))).filter(x => x != null);
+};
+
 /**
  * Pack a favorite for API response
  */
@@ -70,5 +77,11 @@ export const pack = (
 	// Populate note
 	_favorite.note = await packNote(_favorite.noteId, me);
 
+	// (データベースの不具合などで)投稿が見つからなかったら
+	if (_favorite.note == null) {
+		console.warn(`favorite: note not found on database: ${_favorite.noteId}`);
+		return resolve(null);
+	}
+
 	resolve(_favorite);
 });
diff --git a/src/server/api/endpoints/i/favorites.ts b/src/server/api/endpoints/i/favorites.ts
index 32c1a55fb0..e7cf8a71a7 100644
--- a/src/server/api/endpoints/i/favorites.ts
+++ b/src/server/api/endpoints/i/favorites.ts
@@ -1,5 +1,5 @@
 import $ from 'cafy'; import ID from '../../../../misc/cafy-id';
-import Favorite, { pack } from '../../../../models/favorite';
+import Favorite, { packMany } from '../../../../models/favorite';
 import { ILocalUser } from '../../../../models/user';
 
 export const meta = {
@@ -55,5 +55,5 @@ export default (params: any, user: ILocalUser) => new Promise(async (res, rej) =
 		.find(query, { limit, sort });
 
 	// Serialize
-	res(await Promise.all(favorites.map(favorite => pack(favorite, user))));
+	res(await packMany(favorites, user));
 });