diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 4cdb4a7985..9df3b0e278 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -637,15 +637,13 @@ common/views/components/emoji-picker.vue:
   symbols: "記号"
   flags: "旗"
 
-common/views/components/settings/client-mode.vue:
+common/views/components/settings/app-type.vue:
   title: "モード"
   intro: "デスクトップ版とモバイル版のどちらを使うかを指定できます。"
   choices:
     auto: "自動で選択"
     desktop: "デスクトップ版に固定"
     mobile: "モバイル版に固定"
-  desktop: "デスクトップ"
-  mobile: "モバイル"
   info: "変更はページの再度読み込み後に反映されます。"
 
 common/views/components/signin.vue:
diff --git a/src/client/app/boot.js b/src/client/app/boot.js
index 87a12e5cfa..29052c1519 100644
--- a/src/client/app/boot.js
+++ b/src/client/app/boot.js
@@ -35,12 +35,12 @@
 	const url = new URL(location.href);
 
 	//#region Detect app name
-	window.appType = null;
+	let app = null;
 
-	if (`${url.pathname}/`.startsWith('/docs/')) window.appType = 'docs';
-	if (`${url.pathname}/`.startsWith('/dev/')) window.appType = 'dev';
-	if (`${url.pathname}/`.startsWith('/auth/')) window.appType = 'auth';
-	if (`${url.pathname}/`.startsWith('/admin/')) window.appType = 'admin';
+	if (`${url.pathname}/`.startsWith('/docs/')) app = 'docs';
+	if (`${url.pathname}/`.startsWith('/dev/')) app = 'dev';
+	if (`${url.pathname}/`.startsWith('/auth/')) app = 'auth';
+	if (`${url.pathname}/`.startsWith('/admin/')) app = 'admin';
 	//#endregion
 
 	// Script version
@@ -105,15 +105,15 @@
 	}
 
 	// Switch desktop or mobile version
-	if (window.appType == null) {
-		window.appType = isMobile ? 'mobile' : 'desktop';
+	if (app == null) {
+		app = isMobile ? 'mobile' : 'desktop';
 	}
 
 	// Load an app script
 	// Note: 'async' make it possible to load the script asyncly.
 	//       'defer' make it possible to run the script when the dom loaded.
 	const script = document.createElement('script');
-	script.setAttribute('src', `/assets/${window.appType}.${ver}.js`);
+	script.setAttribute('src', `/assets/${app}.${ver}.js`);
 	script.setAttribute('async', 'true');
 	script.setAttribute('defer', 'true');
 	head.appendChild(script);
diff --git a/src/client/app/common/views/components/settings/app-type.vue b/src/client/app/common/views/components/settings/app-type.vue
index 61a23866e2..90ff28803b 100644
--- a/src/client/app/common/views/components/settings/app-type.vue
+++ b/src/client/app/common/views/components/settings/app-type.vue
@@ -7,7 +7,6 @@
 		<ui-select v-model="appTypeForce" :placeholder="$t('intro')">
 			<option v-for="x in ['auto', 'desktop', 'mobile']" :value="x" :key="x">{{ $t(`choices.${x}`) }}</option>
 		</ui-select>
-		<ui-info>Current: <i>{{ $t(currentAppType) }}</i></ui-info>
 		<ui-info warn>{{ $t('info') }}</ui-info>
 	</section>
 </ui-card>
@@ -19,12 +18,10 @@ import i18n from '../../../../i18n';
 import { faMobileAlt } from '@fortawesome/free-solid-svg-icons'
 
 export default Vue.extend({
-	i18n: i18n('common/views/components/settings/client-mode.vue'),
+	i18n: i18n('common/views/components/settings/app-type.vue'),
 
 	data() {
 		return {
-			currentAppType: (window as any).appType,
-
 			faMobileAlt
 		};
 	},