diff --git a/src/client/app/config.ts b/src/client/app/config.ts
index a326c521d..2e464c50f 100644
--- a/src/client/app/config.ts
+++ b/src/client/app/config.ts
@@ -5,6 +5,7 @@ declare const _COPYRIGHT_: string;
 declare const _VERSION_: string;
 declare const _CODENAME_: string;
 declare const _ENV_: string;
+declare const _NAME_: string;
 
 const address = new URL(location.href);
 
@@ -20,3 +21,4 @@ export const copyright = _COPYRIGHT_;
 export const version = _VERSION_;
 export const codename = _CODENAME_;
 export const env = _ENV_;
+export const name = _NAME_;
diff --git a/src/client/app/desktop/views/pages/deck/deck.vue b/src/client/app/desktop/views/pages/deck/deck.vue
index 26b989656..5e7a07ea6 100644
--- a/src/client/app/desktop/views/pages/deck/deck.vue
+++ b/src/client/app/desktop/views/pages/deck/deck.vue
@@ -85,6 +85,7 @@ export default Vue.extend({
 	},
 
 	mounted() {
+		document.title = (this as any).os.instanceName;
 		document.documentElement.style.overflow = 'hidden';
 	},
 
diff --git a/src/client/app/mios.ts b/src/client/app/mios.ts
index 0f72cd2f3..d9d4ee9a0 100644
--- a/src/client/app/mios.ts
+++ b/src/client/app/mios.ts
@@ -3,7 +3,7 @@ import { EventEmitter } from 'eventemitter3';
 import * as uuid from 'uuid';
 
 import initStore from './store';
-import { apiUrl, version, lang } from './config';
+import { apiUrl, version, lang, name } from './config';
 import Progress from './common/scripts/loading';
 import Connection from './common/scripts/streaming/stream';
 import { HomeStreamManager } from './common/scripts/streaming/home';
@@ -72,7 +72,7 @@ export default class MiOS extends EventEmitter {
 	};
 
 	public get instanceName() {
-		return this.meta ? this.meta.data.name : 'Misskey';
+		return this.meta ? this.meta.data.name : name;
 	}
 
 	private isMetaFetching = false;
diff --git a/src/server/web/views/note.pug b/src/server/web/views/note.pug
index 4f7c3d777..234ecabe2 100644
--- a/src/server/web/views/note.pug
+++ b/src/server/web/views/note.pug
@@ -6,7 +6,7 @@ block vars
 	- const url = `${config.url}/notes/${note.id}`;
 
 block title
-	= `${title} | Misskey`
+	= `${title} | ${config.name}`
 
 block desc
 	meta(name='description' content= summary)
diff --git a/src/server/web/views/user.pug b/src/server/web/views/user.pug
index 63d2f7515..506a889d9 100644
--- a/src/server/web/views/user.pug
+++ b/src/server/web/views/user.pug
@@ -6,7 +6,7 @@ block vars
 	- const img = user.avatarId ? `${config.drive_url}/${user.avatarId}` : null;
 
 block title
-	= `${title} | Misskey`
+	= `${title} | ${config.name}`
 
 block desc
 	meta(name='description' content= user.description)
diff --git a/webpack.config.ts b/webpack.config.ts
index a50d6c40c..bc1c0ddbc 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -22,6 +22,7 @@ const locales = require('./locales');
 const meta = require('./package.json');
 const version = `${meta.clientVersion}-${rndstr({ length: 8, chars: '0-9a-z' })}`;
 const codename = meta.codename;
+import config from './src/config';
 
 declare var global: {
 	faReplacement: typeof faReplacement;
@@ -75,7 +76,8 @@ const consts = {
 	_CODENAME_: codename,
 	_LANG_: '%lang%',
 	_LANGS_: Object.keys(locales).map(l => [l, locales[l].meta.lang]),
-	_ENV_: process.env.NODE_ENV
+	_ENV_: process.env.NODE_ENV,
+	_NAME_: config.name
 };
 
 const _consts: { [ key: string ]: any } = {};