diff --git a/lib/bootstrap.js b/lib/bootstrap.js
index 26eef2f6..ccde8615 100644
--- a/lib/bootstrap.js
+++ b/lib/bootstrap.js
@@ -201,9 +201,13 @@ new function() {
 
 			read: function(args, index, length) {
 				var index = index || 0, length = length || args.length - index;
-				if (length == 1 && args[index] instanceof this) {
-					return args[index];
-				} else if (length != 0) {
+				if (length == 1) {
+					var arg = args[index];
+					// Return null when only null was provided
+					if (arg instanceof this || arg == null)
+						return arg;
+				}
+				if (length > 0) {
 					var obj = new this(this.dont);
 					obj = obj.initialize.apply(obj, index > 0 || length < args.length
 							? Array.prototype.slice.call(args, index, index + length)