diff --git a/client/modules/IDE/components/Editor.js b/client/modules/IDE/components/Editor.js
index 416d1c81..e7cb8647 100644
--- a/client/modules/IDE/components/Editor.js
+++ b/client/modules/IDE/components/Editor.js
@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { PropTypes } from 'react';
 import CodeMirror from 'codemirror';
 import 'codemirror/mode/javascript/javascript';
 import 'codemirror/addon/selection/active-line';
@@ -40,4 +40,10 @@ class Editor extends React.Component {
   }
 }
 
+Editor.propTypes = {
+  content: PropTypes.string.isRequired,
+  updateFile: PropTypes.func.isRequired,
+  fontSize: PropTypes.number.isRequired
+};
+
 export default Editor;
diff --git a/client/modules/IDE/components/Preview.js b/client/modules/IDE/components/Preview.js
index aea0132f..5db7d07f 100644
--- a/client/modules/IDE/components/Preview.js
+++ b/client/modules/IDE/components/Preview.js
@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { PropTypes } from 'react';
 
 class Preview extends React.Component {
   componentDidMount() {
@@ -17,4 +17,8 @@ class Preview extends React.Component {
   }
 }
 
+Preview.propTypes = {
+  content: PropTypes.string.isRequired
+};
+
 export default Preview;