diff --git a/webpack.config.ts b/webpack.config.ts
index 9e390f4607..b67c0e9036 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -10,7 +10,6 @@ const constants = require('./src/const.json');
 
 const languages = {
 	'en': require('./locales/en.json'),
-	'en-US': require('./locales/en.json'),
 	'ja': require('./locales/ja.json')
 };