diff --git a/src/browser/ReactDOM.js b/src/browser/ReactDOM.js
index 8439a24b4b..79947d2975 100644
--- a/src/browser/ReactDOM.js
+++ b/src/browser/ReactDOM.js
@@ -22,7 +22,7 @@
 var ReactDOMComponent = require('ReactDOMComponent');
 
 var mergeInto = require('mergeInto');
-var objMapKeyVal = require('objMapKeyVal');
+var mapObject = require('mapObject');
 
 /**
  * Creates a new React class that is idempotent and capable of containing other
@@ -39,7 +39,7 @@ var objMapKeyVal = require('objMapKeyVal');
  * @param {boolean} omitClose True if the close tag should be omitted.
  * @private
  */
-function createDOMComponentClass(tag, omitClose) {
+function createDOMComponentClass(omitClose, tag) {
   var Constructor = function() {};
   Constructor.prototype = new ReactDOMComponent(tag, omitClose);
   Constructor.prototype.constructor = Constructor;
@@ -68,7 +68,7 @@ function createDOMComponentClass(tag, omitClose) {
  *
  * @public
  */
-var ReactDOM = objMapKeyVal({
+var ReactDOM = mapObject({
   a: false,
   abbr: false,
   address: false,
diff --git a/src/core/__tests__/ReactMultiChildReconcile-test.js b/src/core/__tests__/ReactMultiChildReconcile-test.js
index 3ff91ecbc2..a560ac13d2 100644
--- a/src/core/__tests__/ReactMultiChildReconcile-test.js
+++ b/src/core/__tests__/ReactMultiChildReconcile-test.js
@@ -25,7 +25,7 @@ var React = require('React');
 var ReactTestUtils = require('ReactTestUtils');
 var ReactMount = require('ReactMount');
 
-var objMapKeyVal = require('objMapKeyVal');
+var mapObject = require('mapObject');
 
 var stripEmptyValues = function(obj) {
   var ret = {};
@@ -126,7 +126,7 @@ var FriendsStatusDisplay = React.createClass({
 
 
 function getInteralStateByUserName(statusDisplays) {
-  return objMapKeyVal(statusDisplays, function(key, statusDisplay) {
+  return mapObject(statusDisplays, function(statusDisplay, key) {
     return statusDisplay.getInternalState();
   });
 }
diff --git a/src/utils/objMapKeyVal.js b/src/utils/objMapKeyVal.js
deleted file mode 100644
index e2f93ebb8c..0000000000
--- a/src/utils/objMapKeyVal.js
+++ /dev/null
@@ -1,47 +0,0 @@
-/**
- * Copyright 2013-2014 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @providesModule objMapKeyVal
- */
-
-"use strict";
-
-/**
- * Behaves the same as `objMap` but invokes func with the key first, and value
- * second. Use `objMap` unless you need this special case.
- * Invokes func as:
- *
- *   func(key, value, iteration)
- *
- * @param {?object} obj Object to map keys over
- * @param {!function} func Invoked for each key/val pair.
- * @param {?*} context
- * @return {?object} Result of mapping or null if obj is falsey
- */
-function objMapKeyVal(obj, func, context) {
-  if (!obj) {
-    return null;
-  }
-  var i = 0;
-  var ret = {};
-  for (var key in obj) {
-    if (obj.hasOwnProperty(key)) {
-      ret[key] = func.call(context, key, obj[key], i++);
-    }
-  }
-  return ret;
-}
-
-module.exports = objMapKeyVal;