diff --git a/core/src/test/java/edu/umd/cs/piccolo/PNodeTest.java b/core/src/test/java/edu/umd/cs/piccolo/PNodeTest.java
index ea19f9a..d93f27a 100644
--- a/core/src/test/java/edu/umd/cs/piccolo/PNodeTest.java
+++ b/core/src/test/java/edu/umd/cs/piccolo/PNodeTest.java
@@ -239,7 +239,7 @@
 
         final PNode clonedNode = (PNode) node.clone();
 
-        assertNull(clonedNode.getListenerList());               
+        assertNull(clonedNode.getListenerList());      
     }
     
     public void testCloneClonesChildrenAswell() {
@@ -252,6 +252,18 @@
         assertNotSame(child, clonedNode.getChild(0));
     }
     
+    public void testCloneDoesADeepCopy() {
+        final PNode child = new PNode();
+        node.addChild(child);
+
+        final PNode clonedNode = (PNode) node.clone();
+
+        assertNotSame(node.getChildrenReference(), clonedNode.getChildrenReference());
+        assertNotSame(node.getChild(0), clonedNode.getChild(0));
+        
+        assertNotSame(node.getBoundsReference(), clonedNode.getBoundsReference());
+    }
+    
     public void testCloneDoesNotCopyParent() {
         final PNode child = new PNode();
         node.addChild(child);