diff --git a/12/torusKnot.js b/12/torusKnot.js
index 862ca9a..66e2e00 100644
--- a/12/torusKnot.js
+++ b/12/torusKnot.js
@@ -3,7 +3,7 @@ var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeig
 var canvas = document.getElementById('torusKnot');
 var renderer = new THREE.WebGLRenderer();
 renderer.setSize( window.innerWidth/2, window.innerHeight/2 );
-document.body.appendChild(canvas);
+document.body.appendChild(renderer.domElement);
 
 var geometry = new THREE.TorusKnotGeometry( 10, 3, 100, 16 );
 var material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );