diff --git a/source/Ox/js/Array.js b/source/Ox/js/Array.js
index 3cc5d5f1..e8389e85 100644
--- a/source/Ox/js/Array.js
+++ b/source/Ox/js/Array.js
@@ -487,14 +487,15 @@ Ox.range = function() {
         [{id: 1, name: '8 Women'}, {id: 0, name: '80 Days'}]
     @*/
     Ox.sortBy = function(arr, by, fn) {
-        var length = by.length, values = {};
+        var values = {};
+        by = Ox.toArray(by);
+        fn = fn || {};
         by = by.map(function(v) {
             return Ox.isString(v) ? {
                 key: v.replace(/^[\+\-]/, ''),
                 operator: v[0] == '-' ? '-' : '+'
             } : v;
         });
-        fn = fn || {};
         by.map(function(v) {
             return v.key;
         }).forEach(function(key) {
@@ -504,7 +505,7 @@ Ox.range = function() {
         });
         return arr.sort(function(a, b) {
             var aValue, bValue, index = 0, key, ret = 0;
-            while (ret == 0 && index < length) {
+            while (ret == 0 && index < by.length) {
                 key = by[index].key;
                 aValue = values[key][a[key]];
                 bValue = values[key][b[key]];