diff --git a/apps/locale/locale.html b/apps/locale/locale.html
index f9d89f846..72c862da0 100644
--- a/apps/locale/locale.html
+++ b/apps/locale/locale.html
@@ -192,8 +192,8 @@ var is12;
 function getHours(d) {
   var h = d.getHours();
   if (is12 === undefined) is12 = (require('Storage').readJSON('setting.json', 1) || {})["12hour"];
-  if (!is12) return ('0'+h).slice(-2); // return with leading zero in 24-hour format
-  return (h % 12 == 0) ? 12 : h % 12;
+  if (!is12) return ('0' + h).slice(-2);
+  return ((h % 12 == 0) ? 12 : h % 12).toString();
 }
 exports = {
   name: ${js(locale.lang)},