diff --git a/frontend/src/components/UI/LanguageMenu.vue b/frontend/src/components/UI/LanguageMenu.vue
index 6038bbc37..fffa39431 100644
--- a/frontend/src/components/UI/LanguageMenu.vue
+++ b/frontend/src/components/UI/LanguageMenu.vue
@@ -47,7 +47,7 @@ export default {
       items: [
         {
           name: "English",
-          value: "en",
+          value: "en-US",
         },
       ],
     };
diff --git a/frontend/src/plugins/vuetify.js b/frontend/src/plugins/vuetify.js
index 522f30fd3..368c9a687 100644
--- a/frontend/src/plugins/vuetify.js
+++ b/frontend/src/plugins/vuetify.js
@@ -3,15 +3,14 @@ import Vuetify from "vuetify/lib";
 
 Vue.use(Vuetify);
 
-// language IDs should match those from VueI18n with _ instead of - 
-import de_DE from 'vuetify/es5/locale/de';
-import en_US from 'vuetify/es5/locale/en';
-import fr_FR from 'vuetify/es5/locale/fr';
-import pl_PL from 'vuetify/es5/locale/pl';
-import pt_PT from 'vuetify/es5/locale/pt';
-import sv_SE from 'vuetify/es5/locale/sv';
-import zh_CN from 'vuetify/es5/locale/zh-Hans';
-import zh_TW from 'vuetify/es5/locale/zh-Hant';
+import de from 'vuetify/es5/locale/de';
+import en from 'vuetify/es5/locale/en';
+import fr from 'vuetify/es5/locale/fr';
+import pl from 'vuetify/es5/locale/pl';
+import pt from 'vuetify/es5/locale/pt';
+import sv from 'vuetify/es5/locale/sv';
+import zhHans from 'vuetify/es5/locale/zh-Hans';
+import zhHant from 'vuetify/es5/locale/zh-Hant';
 
 
 const vuetify = new Vuetify({
@@ -42,16 +41,16 @@ const vuetify = new Vuetify({
   },
   lang: {
     locales: {
-      de_DE,
-      en_US, 
-      fr_FR, 
-      pl_PL, 
-      pt_PT, 
-      sv_SE, 
-      zh_CN,
-      zh_TW
+      'de-DE' : de,
+      'en-US' : en, 
+      'fr-FR' : fr, 
+      'pl-PL' : pl, 
+      'pt-PT' : pt, 
+      'sv-SE' : sv, 
+      'zh-CN' : zhHans,
+      'zh-TW' : zhHant
     },
-    current: 'en_US',
+    current: 'en-US',
   },
 });
 
diff --git a/frontend/src/store/modules/language.js b/frontend/src/store/modules/language.js
index 963cfb1ae..7b684fe1c 100644
--- a/frontend/src/store/modules/language.js
+++ b/frontend/src/store/modules/language.js
@@ -1,7 +1,7 @@
 import VueI18n from "../../i18n";
 
 const state = {
-  lang: "en",
+  lang: "en-US",
   allLangs: [
     {
       name: "English",
@@ -52,7 +52,7 @@ const mutations = {
 const actions = {
   initLang({ getters }, { currentVueComponent }) {
     VueI18n.locale = getters.getActiveLang;
-    currentVueComponent.$vuetify.lang.current = getters.getActiveLang.replace('-', '_');
+    currentVueComponent.$vuetify.lang.current = getters.getActiveLang;
   },
 };