diff --git a/94xi7aitax.js b/94xi7aitax.js
index 4824c9e..5d04268 100644
--- a/94xi7aitax.js
+++ b/94xi7aitax.js
@@ -34,21 +34,28 @@ if (!this.initialized) {
 
 var diff = data.delta * this.speed;
 
-var deadClouds = this.clouds.reduce(
+var cloudInfo = this.clouds.reduce(
 	function(result, cloud) {
 		cloud.position.x += diff;
 		cloud.updateInstance('position');
 		
 		if (cloud.position.x > 50) {
-			result.push(cloud);
+			result.dead.push(cloud);
+		} else {
+			result.alive.push(cloud);
 		}
 		
 		return result;
 	},
-	[]
+	{
+		alive : [],
+		dead  : []
+	}
 );
 
-deadClouds.map(
+this.clouds = cloudInfo.alive;
+
+cloudInfo.dead.map(
 	function(deadCloud) {
 		deadCloud.geometry	= null;
 		deadCloud.materials = null;