diff --git a/lib/address.js b/lib/address.js
index a11342b..f80f145 100644
--- a/lib/address.js
+++ b/lib/address.js
@@ -460,7 +460,8 @@ Address.prototype.isPayToScriptHash = function() {
  * @returns {Buffer} Bitcoin address buffer
  */
 Address.prototype.toBuffer = function() {
-  var version = new Buffer([this.network[this.type]]);
+  var version = new Buffer(2);
+  version.writeUInt16BE(this.network[this.type], 0);
   var buf = Buffer.concat([version, this.hashBuffer]);
   return buf;
 };