diff --git a/src/components/Header.react.js b/src/components/Header.react.js
index 63754f1d38..f1f59b861a 100644
--- a/src/components/Header.react.js
+++ b/src/components/Header.react.js
@@ -106,7 +106,7 @@ var Header = React.createClass({
         </div>
       );
     } else {
-      if (false /*util.isWindows()*/) {
+      if (util.isWindows()) {
         buttons = (
           <div className="windows-buttons">
           <div className="windows-button button-close enabled" onClick={this.handleClose}></div>