diff --git a/lib/privkey.js b/lib/privkey.js
index ed580bf..dac93e5 100644
--- a/lib/privkey.js
+++ b/lib/privkey.js
@@ -4,30 +4,18 @@ var constants = require('./constants');
 var base58check = require('./base58check');
 
 var Privkey = function(n, network, compressed) {
-  if (typeof n !== 'undefined')
-    this.setNumber(n);
-  if (typeof network !== 'undefined')
-    this.setNetwork(network);
-  if (typeof compressed !== 'undefined')
-    this.setCompressed(compressed);
-};
-
-Privkey.prototype.setNumber = function(n) {
-  if (!n.lt(point.getN()))
-    throw new Error('privkey: Number must be less than N');
   this.n = n;
-};
-
-Privkey.prototype.setNetwork = function(network) {
-  if (typeof constants[network] === undefined)
-    throw new Error('privkey: Must specify the network ("mainnet" or "testnet")');
   this.network = network;
+  this.compressed = compressed;
 };
 
-Privkey.prototype.setCompressed = function(compressed) {
-  if (typeof compressed !== 'boolean')
+Privkey.prototype.validate = function() {
+  if (!this.n.lt(point.getN()))
+    throw new Error('privkey: Number must be less than N');
+  if (typeof constants[this.network] === undefined)
+    throw new Error('privkey: Must specify the network ("mainnet" or "testnet")');
+  if (typeof this.compressed !== 'boolean')
     throw new Error('privkey: Must specify whether the corresponding public key is compressed or not (true or false)');
-  this.compressed = compressed;
 };
 
 Privkey.prototype.toWIF = function() {