diff --git a/lib/string.js b/lib/string.js
index 5f079766..0a6f6f6f 100644
--- a/lib/string.js
+++ b/lib/string.js
@@ -489,10 +489,11 @@ helpers.replaceFirst = function(str, a, b) {
  * @api public
  */
 
-helpers.reverse = function(str) {
-  if (!util.isString(str)) return '';
-  return str.split('').reverse().join('');
-};
+// this function is already define in array functions
+// helpers.reverse = function(str) {
+//   if (!util.isString(str)) return '';
+//   return str.split('').reverse().join('');
+// };
 
 /**
  * Sentence case the given string