✌️

src/client/app/boot.js

@@ -32,7 +32,7 @@
 	// Detect the user language
 	// Note: The default language is Japanese
 	let lang = navigator.language.split('-')[0];
-	if (!/^(en|ja)$/.test(lang)) lang = 'ja';
+	if (!LANGS.includes(lang)) lang = 'en';
 	if (localStorage.getItem('lang')) lang = localStorage.getItem('lang');
 
 	// Detect the user agent

src/client/app/desktop/views/components/settings.vue

@@ -80,10 +80,11 @@
 					<el-option label="自動" value=""/>
 				</el-option-group>
 				<el-option-group label="言語を指定">
-					<el-option label="ja-JP" value="ja"/>
-					<el-option label="en-US" value="en"/>
+					<el-option label="ja" value="ja"/>
+					<el-option label="en" value="en"/>
 					<el-option label="fr" value="fr"/>
 					<el-option label="pl" value="pl"/>
+					<el-option label="de" value="de"/>
 				</el-option-group>
 			</el-select>
 			<div class="none ui info">