diff --git a/examples/webgl_loader_collada_keyframe.html b/examples/webgl_loader_collada_keyframe.html
index 83dbec347921a099efb8115b7aac0555a8a03672..d13e9c381319c3280230ce9fbe6fc6bffda07fbf 100644
--- a/examples/webgl_loader_collada_keyframe.html
+++ b/examples/webgl_loader_collada_keyframe.html
@@ -55,7 +55,7 @@
 			var kfAnimations = [ ];
 			var kfAnimationsLength = 0;
 			var loader = new THREE.ColladaLoader();
-			var lastTimestamp;
+			var lastTimestamp = 0;
 			var progress = 0;
 
 			loader.load( './models/collada/pump/pump.dae', function ( collada ) {
@@ -188,18 +188,17 @@
 						}
 
 					}
+
 					animation.loop = false;
 					animation.play();
-					lastTimestamp = Date.now();
 
 				}
 
 			}
 
-			function animate() {
+			function animate( timestamp ) {
 
-				var timestamp = Date.now();
-				var frameTime = ( timestamp - lastTimestamp ) * 0.001; // seconds
+				var frameTime = ( timestamp - lastTimestamp ) * 0.001;
 
 				if ( progress >= 0 && progress < 48 ) {
 
diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index 6e35dd7fee0d148d6940f533e36b98d4c63868ac..3daabea11a9d1ecab57bff6a3b4b7ee15be078e4 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -3235,7 +3235,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 		opaqueObjects.length = 0;
 		transparentObjects.length = 0;
 
-		projectObject( scene, scene, camera );
+		projectObject( scene, scene );
 
 		if ( _this.sortObjects === true ) {
 
@@ -3333,7 +3333,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	};
 
-	function projectObject(scene, object,camera){
+	function projectObject( scene, object ) {
 
 		if ( object.visible === false ) return;
 
@@ -3390,7 +3390,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		for ( var i = 0, l = object.children.length; i < l; i ++ ) {
 
-			projectObject( scene, object.children[ i ], camera );
+			projectObject( scene, object.children[ i ] );
 
 		}