diff --git a/src/helma/xmlrpc/XmlRpcServer.java b/src/helma/xmlrpc/XmlRpcServer.java
index e8d52adb..8182049c 100644
--- a/src/helma/xmlrpc/XmlRpcServer.java
+++ b/src/helma/xmlrpc/XmlRpcServer.java
@@ -263,7 +263,11 @@ class Invoker implements XmlRpcHandler {
 	catch (SecurityException s_e){			
 	    throw s_e;
 	}
-					
+
+	// our policy is to make all public methods callable except the ones defined in java.lang.Object
+	if (method.getDeclaringClass () == Class.forName ("java.lang.Object"))
+	    throw new XmlRpcException (0, "Invoker can't call methods defined in java.lang.Object");
+
 	// invoke
 	Object returnValue = null;
 	try {