diff --git a/21g30t1e75.js b/21g30t1e75.js
index 3019261..9f87ce9 100644
--- a/21g30t1e75.js
+++ b/21g30t1e75.js
@@ -36,7 +36,7 @@ GameLib.CustomCode.prototype.createMaterial = function(image) {
 
 GameLib.CustomCode.prototype.createGameMesh = function(image) {
 	return new GameLib.D3.Mesh(
-		runtime.graphics,
+		this.runtime.graphics,
 		{
 			geometry  : this.geometryBody,
 			materials : this.createMaterial(image)