diff --git a/src/addons/link/ReactLink.js b/src/addons/link/ReactLink.js
index f7a798e7ff..24b6d8cb9e 100644
--- a/src/addons/link/ReactLink.js
+++ b/src/addons/link/ReactLink.js
@@ -63,9 +63,9 @@ function ReactLink(value, requestChange) {
  */
 function createLinkTypeChecker(linkType) {
   var shapes = {
-    value: typeof linkType === 'undefined'
-      ? React.PropTypes.any.isRequired
-      : linkType.isRequired,
+    value: typeof linkType === 'undefined' ?
+      React.PropTypes.any.isRequired :
+      linkType.isRequired,
     requestChange: React.PropTypes.func.isRequired
   };
   return React.PropTypes.shape(shapes);
diff --git a/src/event/EventPluginHub.js b/src/event/EventPluginHub.js
index 4d36756496..76dc8e1448 100644
--- a/src/event/EventPluginHub.js
+++ b/src/event/EventPluginHub.js
@@ -20,7 +20,6 @@
 
 var EventPluginRegistry = require('EventPluginRegistry');
 var EventPluginUtils = require('EventPluginUtils');
-var ExecutionEnvironment = require('ExecutionEnvironment');
 
 var accumulate = require('accumulate');
 var forEachAccumulated = require('forEachAccumulated');
diff --git a/src/test/reactComponentExpect.js b/src/test/reactComponentExpect.js
index 2288684440..89cc817805 100644
--- a/src/test/reactComponentExpect.js
+++ b/src/test/reactComponentExpect.js
@@ -17,6 +17,8 @@
  * @nolint
  */
 
+"use strict";
+
 var ReactTestUtils = require('ReactTestUtils');
 
 var mergeInto = require('mergeInto');
@@ -73,7 +75,7 @@ mergeInto(reactComponentExpect.prototype, {
     // change soon.
     this.toBeDOMComponent();
     var renderedChildren = this.instance()._renderedChildren || {};
-    for (name in renderedChildren) {
+    for (var name in renderedChildren) {
       if (!renderedChildren.hasOwnProperty(name)) {
         continue;
       }