diff --git a/src/core/Group.js b/src/core/Group.js
index c91e07da0..7030d357b 100644
--- a/src/core/Group.js
+++ b/src/core/Group.js
@@ -476,7 +476,7 @@ Phaser.Group.prototype.moveUp = function (child) {
 
         if (b)
         {
-            this.swap(a, b);
+            this.swap(child, b);
         }
     }
 
@@ -500,7 +500,7 @@ Phaser.Group.prototype.moveDown = function (child) {
 
         if (b)
         {
-            this.swap(a, b);
+            this.swap(child, b);
         }
     }