diff --git a/src/helma/scripting/rhino/HopObject.java b/src/helma/scripting/rhino/HopObject.java
index b8fef9e9..28bf0ff5 100644
--- a/src/helma/scripting/rhino/HopObject.java
+++ b/src/helma/scripting/rhino/HopObject.java
@@ -475,7 +475,9 @@ public class HopObject extends ScriptableObject implements Wrapper {
         ArrayList a = new ArrayList();
 
         while ((e != null) && e.hasMoreElements()) {
-            a.add(Context.toObject(e.nextElement(), core.global));
+            Object obj = e.nextElement();
+            if (obj != null) 
+                a.add(Context.toObject(obj, core.global));
         }
 
         return Context.getCurrentContext().newArray(core.global, a.toArray());