diff --git a/lib/crypto/ecdsa.js b/lib/crypto/ecdsa.js
index 54d41fb..842be38 100644
--- a/lib/crypto/ecdsa.js
+++ b/lib/crypto/ecdsa.js
@@ -25,7 +25,7 @@ ECDSA.prototype.set = function(obj) {
 };
 
 ECDSA.prototype.privkey2pubkey = function(){
-  this.pubkey = PublicKey().fromPrivateKey(this.privkey);
+  this.pubkey = PublicKey.fromPrivateKey(this.privkey);
 };
 
 ECDSA.prototype.calci = function() {
@@ -35,6 +35,7 @@ ECDSA.prototype.calci = function() {
     try {
       Qprime = this.sig2pubkey();
     } catch (e) {
+      console.log(e);
       continue;
     }
     if (Qprime.point.eq(this.pubkey.point)) {
@@ -52,9 +53,9 @@ ECDSA.prototype.fromString = function(str) {
   if (obj.hashbuf)
     this.hashbuf = new Buffer(obj.hashbuf, 'hex');
   if (obj.pubkey)
-    this.pubkey = PublicKey().fromString(obj.pubkey);
+    this.pubkey = PublicKey.fromString(obj.pubkey);
   if (obj.privkey)
-    this.privkey = PrivateKey().fromString(obj.privkey);
+    this.privkey = PrivateKey.fromString(obj.privkey);
   if (obj.sig)
     this.sig = Signature().fromString(obj.sig);
   if (obj.k)
@@ -114,9 +115,7 @@ ECDSA.prototype.sig2pubkey = function() {
   //var Q = R.multiplyTwo(s, G, eNeg).mul(rInv);
   var Q = R.mul(s).add(G.mul(eNeg)).mul(rInv);
 
-  var pubkey = new PublicKey({point: Q});
-  pubkey.compressed = this.sig.compressed;
-  pubkey.validate();
+  var pubkey = PublicKey.fromPoint(Q, this.sig.compressed);
 
   return pubkey;
 };
@@ -125,12 +124,6 @@ ECDSA.prototype.sigError = function() {
   if (!Buffer.isBuffer(this.hashbuf) || this.hashbuf.length !== 32)
     return 'hashbuf must be a 32 byte buffer';
 
-  try {
-    this.pubkey.validate();
-  } catch (e) {
-    return 'Invalid pubkey: ' + e;
-  }
-
   var r = this.sig.r;
   var s = this.sig.s;
   if (!(r.gt(0) && r.lt(Point.getN()))
diff --git a/lib/publickey.js b/lib/publickey.js
index 194d5c2..ea70b7d 100644
--- a/lib/publickey.js
+++ b/lib/publickey.js
@@ -186,11 +186,11 @@ PublicKey.fromBuffer = function(buf) {
  * @param {Point} point - A Point instance
  * @returns {PublicKey} A new valid instance of PublicKey
  */
-PublicKey.fromPoint = function(point){
+PublicKey.fromPoint = function(point, compressed){
   if (!(point instanceof Point)) {
     throw new TypeError('First argument must be an instance of Point.');
   }
-  return new PublicKey(point);
+  return new PublicKey(point, compressed);
 };
 
 /**
diff --git a/test/crypto/ecdsa.js b/test/crypto/ecdsa.js
index 7a8e0e5..5252a5f 100644
--- a/test/crypto/ecdsa.js
+++ b/test/crypto/ecdsa.js
@@ -8,7 +8,6 @@ var PrivateKey = bitcore.PrivateKey;
 var PublicKey = bitcore.PublicKey;
 var Signature = bitcore.Signature;
 var BN = bitcore.crypto.BN;
-var Point = bitcore.crypto.Point;
 
 describe('ECDSA', function() {
 
@@ -20,7 +19,7 @@ describe('ECDSA', function() {
   var ecdsa = new ECDSA();
   ecdsa.hashbuf = Hash.sha256(new Buffer('test data'));
   ecdsa.privkey = new PrivateKey(BN().fromBuffer(new Buffer('fee0a1f7afebf9d2a5a80c0c98a31c709681cce195cbcd06342b517970c0be1e', 'hex')));
-  ecdsa.pubkey = new PublicKey(Point(BN().fromBuffer(new Buffer('ac242d242d23be966085a2b2b893d989f824e06c9ad0395a8a52f055ba39abb2', 'hex'))));
+  ecdsa.privkey2pubkey();
 
   describe('#set', function() {
     
@@ -105,17 +104,10 @@ describe('ECDSA', function() {
       ecdsa.sigError().should.equal('hashbuf must be a 32 byte buffer');
     });
 
-    it('should return an error if the pubkey is invalid', function() {
-      var ecdsa = new ECDSA();
-      ecdsa.hashbuf = Hash.sha256(new Buffer('test'));
-      ecdsa.sigError().indexOf("Invalid pubkey").should.equal(0);
-    });
-
     it('should return an error if r, s are invalid', function() {
       var ecdsa = new ECDSA();
       ecdsa.hashbuf = Hash.sha256(new Buffer('test'));
-      var pk = new PublicKey();
-      pk.fromDER(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'));
+      var pk = PublicKey.fromDER(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'));
       ecdsa.pubkey = pk;
       ecdsa.sig = new Signature();
       ecdsa.sig.r = BN(0);