diff --git a/js/NDN.js b/js/NDN.js
index d0fdb81..f88f178 100644
--- a/js/NDN.js
+++ b/js/NDN.js
@@ -341,7 +341,7 @@
 	var si = new SignedInfo();
 	si.setFields();
 		
-	var co = new ContentObject(new Name(), si, bytes, new Signature()); 
+	var co = new ContentObject(new Name(), si, bytes); 
 	co.sign();
 	var coBinary = encodeToBinaryContentObject(co);