diff --git a/index.html b/index.html
index 436e07d..15cb0c7 100644
--- a/index.html
+++ b/index.html
@@ -134,12 +134,12 @@
 <ul>
   <li>
   	<a href='https://github.com/dataarts/dat.gui/raw/build/DAT.GUI.min.js'><strong>Download the minified source</strong></a>
-    <small id='buildsizemin'>[19.5kb]
+    <small id='buildsizemin'>[19.6kb]
     </small>
   </li>
   <li>
   	<a href='https://github.com/dataarts/dat.gui/raw/build/DAT.GUI.js'><strong>Download the uncompressed source</strong></a>
-    <small id='buildsize'>[33.6kb]
+    <small id='buildsize'>[33.8kb]
     </small>
   </li>
 
diff --git a/src/DAT/GUI/Controller.js b/src/DAT/GUI/Controller.js
index eb06cfc..1e41a82 100644
--- a/src/DAT/GUI/Controller.js
+++ b/src/DAT/GUI/Controller.js
@@ -42,7 +42,13 @@ DAT.GUI.Controller.prototype.unlisten = function() {
 };
 
 DAT.GUI.Controller.prototype.setValue = function(n) {
-  this.object[this.propertyName] = n;
+	if(this.object[this.propertyName] != undefined){
+		this.object[this.propertyName] = n;
+	}else{
+		var o = new Object();
+		o[this.propertyName] = n;
+		this.object.set(o);
+	}
   if (this.changeFunction != null) {
     this.changeFunction.call(this, n);
   }
@@ -51,7 +57,9 @@ DAT.GUI.Controller.prototype.setValue = function(n) {
 };
 
 DAT.GUI.Controller.prototype.getValue = function() {
-  return this.object[this.propertyName];
+	var val = this.object[this.propertyName];
+	if(val == undefined) this.object.get(this.propertyName);
+  return val;
 };
 
 DAT.GUI.Controller.prototype.updateDisplay = function() {
diff --git a/src/DAT/GUI/GUI.js b/src/DAT/GUI/GUI.js
index 98dac43..fa098be 100644
--- a/src/DAT/GUI/GUI.js
+++ b/src/DAT/GUI/GUI.js
@@ -307,6 +307,7 @@ DAT.GUI = function(parameters) {
     }
 
     var value = object[propertyName];
+    if(value == undefined && object.get) value = object.get(propertyName));
 
     // Does this value exist? Is it accessible?
     if (value == undefined) {