diff --git a/src/core/display/Container.js b/src/core/display/Container.js
index d2f35ff..5733963 100644
--- a/src/core/display/Container.js
+++ b/src/core/display/Container.js
@@ -382,7 +382,7 @@
 };
 
 // performance increase to avoid using call.. (10x faster)
-Container.prototype.ContainerUpdateTransform = Container.prototype.updateTransform;
+Container.prototype.containerUpdateTransform = Container.prototype.updateTransform;
 
 /**
  * Retrieves the bounds of the Container as a rectangle. The bounds calculation takes all visible children into consideration.

diff --git a/src/core/display/Container.js b/src/core/display/Container.js
index d2f35ff..5733963 100644
--- a/src/core/display/Container.js
+++ b/src/core/display/Container.js
@@ -382,7 +382,7 @@
 };
 
 // performance increase to avoid using call.. (10x faster)
-Container.prototype.ContainerUpdateTransform = Container.prototype.updateTransform;
+Container.prototype.containerUpdateTransform = Container.prototype.updateTransform;
 
 /**
  * Retrieves the bounds of the Container as a rectangle. The bounds calculation takes all visible children into consideration.
diff --git a/src/extras/MovieClip.js b/src/extras/MovieClip.js
index 95d3a2b..a117a1b 100644
--- a/src/extras/MovieClip.js
+++ b/src/extras/MovieClip.js
@@ -133,7 +133,7 @@
  */
 MovieClip.prototype.updateTransform = function ()
 {
-    this.ContainerUpdateTransform();
+    this.containerUpdateTransform();
 
     if (!this.playing)
     {

diff --git a/src/core/display/Container.js b/src/core/display/Container.js
index d2f35ff..5733963 100644
--- a/src/core/display/Container.js
+++ b/src/core/display/Container.js
@@ -382,7 +382,7 @@
 };
 
 // performance increase to avoid using call.. (10x faster)
-Container.prototype.ContainerUpdateTransform = Container.prototype.updateTransform;
+Container.prototype.containerUpdateTransform = Container.prototype.updateTransform;
 
 /**
  * Retrieves the bounds of the Container as a rectangle. The bounds calculation takes all visible children into consideration.
diff --git a/src/extras/MovieClip.js b/src/extras/MovieClip.js
index 95d3a2b..a117a1b 100644
--- a/src/extras/MovieClip.js
+++ b/src/extras/MovieClip.js
@@ -133,7 +133,7 @@
  */
 MovieClip.prototype.updateTransform = function ()
 {
-    this.ContainerUpdateTransform();
+    this.containerUpdateTransform();
 
     if (!this.playing)
     {
diff --git a/src/extras/Rope.js b/src/extras/Rope.js
index 4dbeb6c..07fbe8c 100644
--- a/src/extras/Rope.js
+++ b/src/extras/Rope.js
@@ -161,7 +161,7 @@
         lastPoint = point;
     }
 
-    this.ContainerUpdateTransform();
+    this.containerUpdateTransform();
 };
 
 /**

diff --git a/src/core/display/Container.js b/src/core/display/Container.js
index d2f35ff..5733963 100644
--- a/src/core/display/Container.js
+++ b/src/core/display/Container.js
@@ -382,7 +382,7 @@
 };
 
 // performance increase to avoid using call.. (10x faster)
-Container.prototype.ContainerUpdateTransform = Container.prototype.updateTransform;
+Container.prototype.containerUpdateTransform = Container.prototype.updateTransform;
 
 /**
  * Retrieves the bounds of the Container as a rectangle. The bounds calculation takes all visible children into consideration.
diff --git a/src/extras/MovieClip.js b/src/extras/MovieClip.js
index 95d3a2b..a117a1b 100644
--- a/src/extras/MovieClip.js
+++ b/src/extras/MovieClip.js
@@ -133,7 +133,7 @@
  */
 MovieClip.prototype.updateTransform = function ()
 {
-    this.ContainerUpdateTransform();
+    this.containerUpdateTransform();
 
     if (!this.playing)
     {
diff --git a/src/extras/Rope.js b/src/extras/Rope.js
index 4dbeb6c..07fbe8c 100644
--- a/src/extras/Rope.js
+++ b/src/extras/Rope.js
@@ -161,7 +161,7 @@
         lastPoint = point;
     }
 
-    this.ContainerUpdateTransform();
+    this.containerUpdateTransform();
 };
 
 /**
diff --git a/src/text/BitmapText.js b/src/text/BitmapText.js
index 8c86354..539e831 100644
--- a/src/text/BitmapText.js
+++ b/src/text/BitmapText.js
@@ -292,7 +292,7 @@
         this.dirty = false;
     }
 
-    this.ContainerUpdateTransform();
+    this.containerUpdateTransform();
 };
 
 BitmapText.fonts = {};