diff --git a/src/api/authenticate.ts b/src/api/authenticate.ts
index 0a888e72d..2304acff2 100644
--- a/src/api/authenticate.ts
+++ b/src/api/authenticate.ts
@@ -1,7 +1,7 @@
 import * as express from 'express';
 import App from './models/app';
 import User from './models/user';
-import Userkey from './models/userkey';
+import AccessToken from './models/access-token';
 import isNativeToken from './common/is-native-token';
 
 export interface IAuthContext {
@@ -42,19 +42,19 @@ export default (req: express.Request) => new Promise<IAuthContext>(async (resolv
 			isSecure: true
 		});
 	} else {
-		const userkeyDoc = await Userkey.findOne({
+		const accessToken = await AccessToken.findOne({
 			hash: token
 		});
 
-		if (userkeyDoc === null) {
-			return reject('invalid userkey');
+		if (accessToken === null) {
+			return reject('invalid token');
 		}
 
 		const app = await App
-			.findOne({ _id: userkeyDoc.app_id });
+			.findOne({ _id: accessToken.app_id });
 
 		const user = await User
-			.findOne({ _id: userkeyDoc.user_id });
+			.findOne({ _id: accessToken.user_id });
 
 		return resolve({ app: app, user: user, isSecure: false });
 	}
diff --git a/src/api/endpoints/auth/accept.js b/src/api/endpoints/auth/accept.js
index 9eb5d2e7e..110a0897d 100644
--- a/src/api/endpoints/auth/accept.js
+++ b/src/api/endpoints/auth/accept.js
@@ -7,7 +7,7 @@ import rndstr from 'rndstr';
 const crypto = require('crypto');
 import App from '../../models/app';
 import AuthSess from '../../models/auth-session';
-import Userkey from '../../models/userkey';
+import AccessToken from '../../models/access-token';
 
 /**
  * Accept
@@ -20,24 +20,24 @@ module.exports = (params, user) =>
 	new Promise(async (res, rej) =>
 {
 	// Get 'token' parameter
-	const token = params.token;
-	if (token == null) {
+	const sesstoken = params.token;
+	if (sesstoken == null) {
 		return rej('token is required');
 	}
 
 	// Fetch token
 	const session = await AuthSess
-		.findOne({ token: token });
+		.findOne({ token: sesstoken });
 
 	if (session === null) {
 		return rej('session not found');
 	}
 
-	// Generate userkey
-	const key = rndstr('a-zA-Z0-9', 32);
+	// Generate access token
+	const token = rndstr('a-zA-Z0-9', 32);
 
-	// Fetch exist userkey
-	const exist = await Userkey.findOne({
+	// Fetch exist access token
+	const exist = await AccessToken.findOne({
 		app_id: session.app_id,
 		user_id: user._id,
 	});
@@ -50,15 +50,15 @@ module.exports = (params, user) =>
 
 		// Generate Hash
 		const sha512 = crypto.createHash('sha512');
-		sha512.update(key + app.secret);
+		sha512.update(token + app.secret);
 		const hash = sha512.digest('hex');
 
-		// Insert userkey doc
-		await Userkey.insert({
+		// Insert access token doc
+		await AccessToken.insert({
 			created_at: new Date(),
 			app_id: session.app_id,
 			user_id: user._id,
-			key: key,
+			token: token,
 			hash: hash
 		});
 	}
diff --git a/src/api/endpoints/auth/session/userkey.js b/src/api/endpoints/auth/session/userkey.js
index 2626e4ce3..f85a720ea 100644
--- a/src/api/endpoints/auth/session/userkey.js
+++ b/src/api/endpoints/auth/session/userkey.js
@@ -5,7 +5,7 @@
  */
 import App from '../../../models/app';
 import AuthSess from '../../../models/auth-session';
-import Userkey from '../../../models/userkey';
+import AccessToken from '../../../models/access-token';
 import serialize from '../../../serializers/user';
 
 /**
@@ -53,8 +53,8 @@ module.exports = (params) =>
 		return rej('this session is not allowed yet');
 	}
 
-	// Lookup userkey
-	const userkey = await Userkey.findOne({
+	// Lookup access token
+	const accessToken = await AccessToken.findOne({
 		app_id: app._id,
 		user_id: session.user_id
 	});
@@ -66,7 +66,7 @@ module.exports = (params) =>
 
 	// Response
 	res({
-		userkey: userkey.key,
+		access_token: accessToken.token,
 		user: await serialize(session.user_id, null, {
 			detail: true
 		})
diff --git a/src/api/models/access-token.ts b/src/api/models/access-token.ts
new file mode 100644
index 000000000..f94df954d
--- /dev/null
+++ b/src/api/models/access-token.ts
@@ -0,0 +1,6 @@
+const collection = global.db.collection('access_tokens');
+
+collection.createIndex('token');
+collection.createIndex('hash');
+
+export default collection;
diff --git a/src/api/models/userkey.ts b/src/api/models/userkey.ts
deleted file mode 100644
index 204f283a2..000000000
--- a/src/api/models/userkey.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-const collection = global.db.collection('userkeys');
-
-collection.createIndex('key');
-
-export default collection;
diff --git a/src/api/serializers/app.ts b/src/api/serializers/app.ts
index 1c4b244a3..b60bcb97e 100644
--- a/src/api/serializers/app.ts
+++ b/src/api/serializers/app.ts
@@ -7,7 +7,7 @@ import * as mongo from 'mongodb';
 import deepcopy = require('deepcopy');
 import App from '../models/app';
 import User from '../models/user';
-import Userkey from '../models/userkey';
+import AccessToken from '../models/access-token';
 
 /**
  * Serialize an app
@@ -71,7 +71,7 @@ export default (
 
 	if (me) {
 		// 既に連携しているか
-		const exist = await Userkey.count({
+		const exist = await AccessToken.count({
 			app_id: _app.id,
 			user_id: me,
 		}, {
diff --git a/src/api/streaming.ts b/src/api/streaming.ts
index dd28a0bc1..49269ac44 100644
--- a/src/api/streaming.ts
+++ b/src/api/streaming.ts
@@ -2,7 +2,7 @@ import * as http from 'http';
 import * as websocket from 'websocket';
 import * as redis from 'redis';
 import User from './models/user';
-import Userkey from './models/userkey';
+import AccessToken from './models/access-token';
 import isNativeToken from './common/is-native-token';
 
 import homeStream from './stream/home';
@@ -63,18 +63,18 @@ function authenticate(connection: websocket.connection, token: string): Promise<
 
 			resolve(user);
 		} else {
-			const userkey = await Userkey.findOne({
+			const accessToken = await AccessToken.findOne({
 				hash: token
 			});
 
-			if (userkey == null) {
-				return reject('invalid userkey');
+			if (accessToken == null) {
+				return reject('invalid token');
 			}
 
 			// Fetch user
 			// SELECT _id
 			const user = await User
-				.findOne({ _id: userkey.user_id }, {
+				.findOne({ _id: accessToken.user_id }, {
 					_id: true
 				});