diff --git a/src/web/app/common/mios.ts b/src/web/app/common/mios.ts
index cf7841d84..838be9c37 100644
--- a/src/web/app/common/mios.ts
+++ b/src/web/app/common/mios.ts
@@ -52,9 +52,20 @@ export default class MiOS extends EventEmitter {
 	 */
 	private swRegistration: ServiceWorkerRegistration = null;
 
-	constructor() {
+	/**
+	 * Whether should register ServiceWorker
+	 */
+	private shouldRegisterSw: boolean;
+
+	/**
+	 * MiOSインスタンスを作成します
+	 * @param shouldRegisterSw ServiceWorkerを登録するかどうか
+	 */
+	constructor(shouldRegisterSw = false) {
 		super();
 
+		this.shouldRegisterSw = shouldRegisterSw;
+
 		//#region BIND
 		this.log = this.log.bind(this);
 		this.logInfo = this.logInfo.bind(this);
@@ -170,7 +181,7 @@ export default class MiOS extends EventEmitter {
 			//#region Post
 
 			// Init service worker
-			this.registerSw();
+			if (this.shouldRegisterSw) this.registerSw();
 
 			//#endregion
 		};
diff --git a/src/web/app/desktop/script.ts b/src/web/app/desktop/script.ts
index 694cb7879..b06cb180e 100644
--- a/src/web/app/desktop/script.ts
+++ b/src/web/app/desktop/script.ts
@@ -40,7 +40,7 @@ init(async (mios: MiOS) => {
 
 	// Start routing
 	route(mios);
-});
+}, true);
 
 function registerNotifications(stream: HomeStreamManager) {
 	if (stream == null) return;
diff --git a/src/web/app/init.ts b/src/web/app/init.ts
index 652cbfde4..19605dc8a 100644
--- a/src/web/app/init.ts
+++ b/src/web/app/init.ts
@@ -52,8 +52,8 @@ if (localStorage.getItem('should-refresh') == 'true') {
 }
 
 // MiOSを初期化してコールバックする
-export default callback => {
-	const mios = new MiOS();
+export default (callback, sw = false) => {
+	const mios = new MiOS(sw);
 
 	mios.init(() => {
 		// ミックスイン初期化
diff --git a/src/web/app/mobile/script.ts b/src/web/app/mobile/script.ts
index 74dfe3dfe..4dfff8f72 100644
--- a/src/web/app/mobile/script.ts
+++ b/src/web/app/mobile/script.ts
@@ -19,4 +19,4 @@ init((mios: MiOS) => {
 
 	// Start routing
 	route(mios);
-});
+}, true);