diff --git a/assets/javascripts/locales/bootstrap-datepicker.zh-CN.min.js b/assets/javascripts/locales/bootstrap-datepicker.zh-CN.min.js
deleted file mode 100644
index 12791764..00000000
--- a/assets/javascripts/locales/bootstrap-datepicker.zh-CN.min.js
+++ /dev/null
@@ -1 +0,0 @@
-!function(a){a.fn.datepicker.dates["zh-CN"]={days:["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],daysShort:["周日","周一","周二","周三","周四","周五","周六"],daysMin:["日","一","二","三","四","五","六"],months:["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],monthsShort:["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],today:"今日",clear:"清除",format:"yyyy年mm月dd日",titleFormat:"yyyy年mm月",weekStart:1}}(jQuery);
\ No newline at end of file
diff --git a/assets/javascripts/locales/bootstrap-datepicker.zh.min.js b/assets/javascripts/locales/bootstrap-datepicker.zh.min.js
new file mode 100644
index 00000000..64602295
--- /dev/null
+++ b/assets/javascripts/locales/bootstrap-datepicker.zh.min.js
@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["zh"]={days:["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],daysShort:["周日","周一","周二","周三","周四","周五","周六"],daysMin:["日","一","二","三","四","五","六"],months:["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],monthsShort:["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],today:"今日",clear:"清除",format:"yyyy年mm月dd日",titleFormat:"yyyy年mm月",weekStart:1}}(jQuery);
diff --git a/lib/redmine_tweaks/helpers/tweaks_helper.rb b/lib/redmine_tweaks/helpers/tweaks_helper.rb
index 8e24d9c6..2b11c98c 100644
--- a/lib/redmine_tweaks/helpers/tweaks_helper.rb
+++ b/lib/redmine_tweaks/helpers/tweaks_helper.rb
@@ -107,7 +107,6 @@ module RedmineTweaks
     def bootstrap_datepicker_locale
       s = ''
       locale = User.current.language.blank? ? ::I18n.locale : User.current.language
-      locale = 'zh-CN' if locale == 'zh'
       s = javascript_include_tag("locales/bootstrap-datepicker.#{locale}.min.js", plugin: 'redmine_tweaks') unless locale == 'en'
       s
     end