--- a/errors.js
+++ b/errors.js
@@ -176,42 +176,39 @@ errors.owner = {
 	},
 };
 
-errors.reverse = {};
+var reverse = {};
 
-function reverseError(o) {
+(function reverseError(o) {
 	for (var i in o) {
 		if (i == 'reverse' || typeof (o[i]) == 'number');
 		else if (!o[i].n)
 			reverseError(o[i]);
 		else {
 			var k = {};
-			//var k = {name: i};
 			for (var j in o[i]) {
 				if (j != 'n')
 					k[j] = o[i][j];
 			}
-			errors.reverse[o[i].n] = k;
+			reverse[o[i].n] = k;
 		}
 	}
-}
-
-reverseError(errors);
+})(errors);
 
 exports.makeError = function(response, errorNumber, payload) {
 	response.attr.type = 'error';
 	if (payload)
 		response.cnode(payload);
 
-	var e = errors.reverse[errorNumber];
+	var e = reverse[errorNumber];
 	response.c('error', {type: e.type});
 
 	response.c(e.error, {xmlns: 'urn:ietf:params:xml:ns:xmpp-stanzas'}).up();
 
 	if (e.reason) {
 		if (e.feature)
-			response.c(e.reason, {xmlns: 'http://jabber.org/protocol/pubsub#errors', feature: e.feature}).up();
+			response.c(e.reason, {xmlns: 'http://jabber.org/protocol/pubsub#errors', feature: e.feature});
 		else
-			response.c(e.reason, {xmlns: 'http://jabber.org/protocol/pubsub#errors'}).up();
+			response.c(e.reason, {xmlns: 'http://jabber.org/protocol/pubsub#errors'});
 	}
 
 	return response;