diff --git a/package.json b/package.json
index db1eabd0..3dacb8c4 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "translatium",
   "description": "Google Translate client for macOS & Windows",
-  "version": "8.6.0",
+  "version": "8.6.1",
   "main": "public/electron.js",
   "repository": "https://github.com/quanglam2807/translatium",
   "author": {
diff --git a/src/constants/display-languages.js b/src/constants/display-languages.js
index e097e609..eb63b4b9 100644
--- a/src/constants/display-languages.js
+++ b/src/constants/display-languages.js
@@ -14,7 +14,7 @@ export default {
   vi: {
     displayName: 'Tiếng Việt',
   },
-  zh: {
+  zh_CN: {
     displayName: '中文',
   },
 };
diff --git a/src/helpers/get-default-lang-id.js b/src/helpers/get-default-lang-id.js
index 98547d6e..ccd36955 100644
--- a/src/helpers/get-default-lang-id.js
+++ b/src/helpers/get-default-lang-id.js
@@ -5,7 +5,7 @@ import displayLanguages from '../constants/display-languages';
 // strip country code from langId
 // en-US => en / vi-vn => vi
 const getLanguageCode = (langId) => {
-  const parts = langId.toLowerCase().split('-');
+  const parts = langId.toLowerCase().replace('_', '-').split('-');
 
   return parts[0];
 };