diff --git a/frontend/src/_locales/i18n-react.ts b/frontend/src/_locales/i18n-react.ts
index de8e3b4..8e6d557 100644
--- a/frontend/src/_locales/i18n-react.ts
+++ b/frontend/src/_locales/i18n-react.ts
@@ -1,7 +1,7 @@
 import i18n, {changeLanguage} from 'i18next';
 import {initReactI18next} from 'react-i18next';
 import {resources} from './resources';
-import {getNavigatorLanguage} from '../utils';
+import {getUserLanguage} from '../utils';
 
 i18n.use(initReactI18next).init({
   resources,
@@ -9,5 +9,5 @@ i18n.use(initReactI18next).init({
     escapeValue: false // not needed for react as it escapes by default
   }
 }).then(() => {
-  changeLanguage(getNavigatorLanguage());
+  changeLanguage(getUserLanguage());
 });
diff --git a/frontend/src/_locales/i18n.ts b/frontend/src/_locales/i18n.ts
index 34ed77c..a5c5e4e 100644
--- a/frontend/src/_locales/i18n.ts
+++ b/frontend/src/_locales/i18n.ts
@@ -1,9 +1,9 @@
 import i18n, {changeLanguage} from 'i18next';
 import {resources} from './resources';
-import {getNavigatorLanguage} from '../utils';
+import {getUserLanguage} from '../utils';
 
 i18n.init({
   resources
 }).then(() => {
-  changeLanguage(getNavigatorLanguage());
+  changeLanguage(getUserLanguage());
 });
diff --git a/frontend/src/pages/Settings.tsx b/frontend/src/pages/Settings.tsx
index f68157b..7c08dac 100644
--- a/frontend/src/pages/Settings.tsx
+++ b/frontend/src/pages/Settings.tsx
@@ -17,7 +17,7 @@ export const Settings: FC = observer(() => {
         <Labeled label={t('Language')} flex spaceBetween content={
           <Dropdown style={{minWidth: 0}} listbox={{style: {minWidth: 0}}}
                     value={Languages[commonStore.settings.language]}
-                    selectedOptions={[Languages[commonStore.settings.language]]}
+                    selectedOptions={[commonStore.settings.language]}
                     onOptionSelect={(_, data) => {
                       if (data.optionValue) {
                         const lang = data.optionValue as Language;
diff --git a/frontend/src/stores/commonStore.ts b/frontend/src/stores/commonStore.ts
index 8b7d704..8c9c87c 100644
--- a/frontend/src/stores/commonStore.ts
+++ b/frontend/src/stores/commonStore.ts
@@ -1,5 +1,5 @@
 import {makeAutoObservable} from 'mobx';
-import {getNavigatorLanguage, isSystemLightMode, Language, saveConfigs, Settings} from '../utils';
+import {getUserLanguage, isSystemLightMode, saveConfigs, Settings} from '../utils';
 import {WindowSetDarkTheme, WindowSetLightTheme} from '../../wailsjs/runtime';
 
 export enum ModelStatus {
@@ -84,7 +84,7 @@ class CommonStore {
   modelSourceManifestList: string = 'https://cdn.jsdelivr.net/gh/josstorer/RWKV-Runner/manifest.json;';
   modelSourceList: ModelSourceItem[] = [];
   settings: Settings = {
-    language: getNavigatorLanguage() as Language,
+    language: getUserLanguage(),
     darkMode: !isSystemLightMode(),
     autoUpdatesCheck: true
   };
diff --git a/frontend/src/utils/index.ts b/frontend/src/utils/index.ts
index ab736b4..696dc42 100644
--- a/frontend/src/utils/index.ts
+++ b/frontend/src/utils/index.ts
@@ -149,10 +149,13 @@ export const saveCache = async () => {
   return SaveJson('cache.json', data);
 };
 
-export function getNavigatorLanguage() {
+export function getUserLanguage(): Language {
   // const l = navigator.language.toLowerCase();
   // if (['zh-hk', 'zh-mo', 'zh-tw', 'zh-cht', 'zh-hant'].includes(l)) return 'zhHant'
-  return navigator.language.substring(0, 2);
+
+  const l = navigator.language.substring(0, 2);
+  if (l in Languages) return l as Language;
+  return 'dev';
 }
 
 export function isSystemLightMode() {