diff --git a/source/Ox/js/Array.js b/source/Ox/js/Array.js
index ee36619a..da243f4f 100644
--- a/source/Ox/js/Array.js
+++ b/source/Ox/js/Array.js
@@ -399,7 +399,7 @@ Ox.compact <f> Removes `null` or `undefined` values from an array
 @*/
 Ox.compact = function(array) {
     return array.filter(function(value) {
-        return !Ox.isNull(value) && !Ox.isUndefined(value);
+        return value != null;
     });
 };
 
@@ -439,9 +439,7 @@ Ox.flatten = function(array) {
     var ret = [];
     array.forEach(function(value) {
         if (Ox.isArray(value)) {
-            Ox.flatten(value).forEach(function(value) {
-                ret.push(value);
-            });
+            ret = ret.concat(Ox.flatten(value));
         } else {
             ret.push(value);
         }