diff --git a/oj/settings.py b/oj/settings.py
index 83d49ef..f2c3f24 100644
--- a/oj/settings.py
+++ b/oj/settings.py
@@ -98,7 +98,7 @@ WSGI_APPLICATION = 'oj.wsgi.application'
 # Internationalization
 # https://docs.djangoproject.com/en/1.8/topics/i18n/
 
-LANGUAGE_CODE = 'zh-cn'
+LANGUAGE_CODE = 'zh-hans'
 
 TIME_ZONE = 'Asia/Shanghai'