diff --git a/config/locales/zh-TW.yml b/config/locales/zh-TW.yml
index 4224cb026..196b0ce98 100644
--- a/config/locales/zh-TW.yml
+++ b/config/locales/zh-TW.yml
@@ -4,6 +4,8 @@
 
 "zh-TW":
   direction: ltr
+  jquery:
+    locale: "zh-TW"
   date:
     formats:
       # Use the strftime parameters for formats.
diff --git a/test/integration/layout_test.rb b/test/integration/layout_test.rb
index 34a29354c..557ce4663 100644
--- a/test/integration/layout_test.rb
+++ b/test/integration/layout_test.rb
@@ -85,6 +85,16 @@ class LayoutTest < ActionController::IntegrationTest
       get '/issues'
       assert_not_include "/javascripts/i18n/jquery.ui.datepicker", response.body
     end
+
+    with_settings :default_language => 'zh' do
+      get '/issues'
+      assert_include "/javascripts/i18n/jquery.ui.datepicker-zh-CN.js", response.body
+    end
+
+    with_settings :default_language => 'zh-TW' do
+      get '/issues'
+      assert_include "/javascripts/i18n/jquery.ui.datepicker-zh-TW.js", response.body
+    end
   end
 
   def test_search_field_outside_project_should_link_to_global_search