diff --git a/js/rhino/src/org/mozilla/javascript/Arguments.java b/js/rhino/src/org/mozilla/javascript/Arguments.java
index d6d06eb7ffd..954b0787868 100644
--- a/js/rhino/src/org/mozilla/javascript/Arguments.java
+++ b/js/rhino/src/org/mozilla/javascript/Arguments.java
@@ -77,7 +77,7 @@ final class Arguments extends IdScriptableObject
 
     public String getClassName()
     {
-        return "Arguments";
+        return "Object";
     }
 
     public boolean has(int index, Scriptable start)