diff --git a/gui.js b/gui.js
index b2c317d..5de51bf 100644
--- a/gui.js
+++ b/gui.js
@@ -605,7 +605,7 @@ GUI.constrain = function (v, o1, o2) {
 
 GUI.error = function(str) {
 	if (typeof console.error == 'function') {
-		console.GUI.error("[GUI ERROR] " + str);
+		console.error("[GUI ERROR] " + str);
 	}
 };
 
diff --git a/index.html b/index.html
index b92f577..bd17f4c 100644
--- a/index.html
+++ b/index.html
@@ -9,6 +9,7 @@
   <link rel="icon" type="image/png" href="demo/assets/favicon.png" />
   <link href="demo/demo.css" media="screen" rel="stylesheet" type="text/css" />
   <link href="gui.css" media="screen" rel="stylesheet" type="text/css" />
+<script type="text/javascript" src="demo/demo.js"></script>
   <script type="text/javascript" src="demo/prettify.js"></script>
   <script type="text/javascript" src="gui-tobeminified.js"></script>
   <script type="text/javascript">