diff --git a/examples/sprites/out of bounds.js b/examples/sprites/out of bounds.js
index 94ffc31f..23b7a51c 100644
--- a/examples/sprites/out of bounds.js	
+++ b/examples/sprites/out of bounds.js	
@@ -13,6 +13,10 @@ var aliens;
 
 function create() {
 
+    //  We only want world bounds on the left and right
+    game.physics.setBoundsToWorld(true, true, false, false);
+    game.physics.friction = 0;
+
     player = game.add.sprite(400, 500, 'ship');
     player.anchor.setTo(0.5, 0.5);
 
@@ -24,7 +28,9 @@ function create() {
         {
             var alien = aliens.create(200 + x * 48, y * 50, 'alien');
             alien.name = 'alien' + x.toString() + y.toString();
+            alien.checkWorldBounds = true;
             alien.events.onOutOfBounds.add(alienOut, this);
+            alien.physicsEnabled = true;
             alien.body.velocity.y = 50 + Math.random() * 200;
         }
     }
diff --git a/src/physics/Body.js b/src/physics/Body.js
index 8c351911..a800f720 100644
--- a/src/physics/Body.js
+++ b/src/physics/Body.js
@@ -1467,13 +1467,13 @@ Object.defineProperty(Phaser.Physics.Body.prototype, "x", {
     
     get: function () {
 
-        return this.p2px(this.data.position[0]);
+        return this.p2pxi(this.data.position[0]);
 
     },
 
     set: function (value) {
 
-        this.data.position[0] = this.px2p(value);
+        this.data.position[0] = this.px2pi(value);
 
     }
 
@@ -1487,13 +1487,13 @@ Object.defineProperty(Phaser.Physics.Body.prototype, "y", {
     
     get: function () {
 
-        return this.p2px(this.data.position[1]);
+        return this.p2pxi(this.data.position[1]);
 
     },
 
     set: function (value) {
 
-        this.data.position[1] = this.px2p(value);
+        this.data.position[1] = this.px2pi(value);
 
     }