diff --git a/packages/backend/test/e2e/note.ts b/packages/backend/test/e2e/note.ts
index 33da811a2..39a296f1a 100644
--- a/packages/backend/test/e2e/note.ts
+++ b/packages/backend/test/e2e/note.ts
@@ -5,6 +5,7 @@ import { Note } from '@/models/entities/Note.js';
 import { signup, post, uploadUrl, startServer, initTestDb, api, uploadFile } from '../utils.js';
 import type { INestApplicationContext } from '@nestjs/common';
 import type * as misskey from 'misskey-js';
+import { MAX_NOTE_TEXT_LENGTH } from '@/const.js';
 
 describe('Note', () => {
 	let app: INestApplicationContext;
@@ -164,7 +165,7 @@ describe('Note', () => {
 
 	test('文字数ぎりぎりで怒られない', async () => {
 		const post = {
-			text: '!'.repeat(3000),
+			text: '!'.repeat(MAX_NOTE_TEXT_LENGTH), // 3000文字
 		};
 		const res = await api('/notes/create', post, alice);
 		assert.strictEqual(res.status, 200);
@@ -172,7 +173,7 @@ describe('Note', () => {
 
 	test('文字数オーバーで怒られる', async () => {
 		const post = {
-			text: '!'.repeat(3001),
+			text: '!'.repeat(MAX_NOTE_TEXT_LENGTH + 1), // 3001文字
 		};
 		const res = await api('/notes/create', post, alice);
 		assert.strictEqual(res.status, 400);