diff --git a/lib/obj2xml.js b/lib/obj2xml.js
index 195b013..4adce1e 100644
--- a/lib/obj2xml.js
+++ b/lib/obj2xml.js
@@ -61,7 +61,7 @@ function obj2xml(obj, options){
 	}
 
 	var xml="";
-	if(!options.disableMeta) xml += util.format("<?xml version='%s' encoding='%s'?>", mv, me);
+	if(options && !options.disableMeta) xml += util.format("<?xml version='%s' encoding='%s'?>", mv, me);
 	xml += getxml(obj);
 
 	return xml;