diff --git a/source/Ox/js/Object.js b/source/Ox/js/Object.js
index 768ad1d0..0534d820 100644
--- a/source/Ox/js/Object.js
+++ b/source/Ox/js/Object.js
@@ -210,6 +210,8 @@ Ox.zipObject <f> Takes a keys and a values array, returns a new object
 @*/
 Ox.zipObject = function(keys, values) {
     var object = {};
+    keys = Ox.makeArray(keys);
+    values = Ox.makeArray(values);
     keys.forEach(function(key, index) {
         object[key] = values[index];
     });