diff --git a/lib/mining/cpuminer.js b/lib/mining/cpuminer.js
index 13511f47..f65e4d9a 100644
--- a/lib/mining/cpuminer.js
+++ b/lib/mining/cpuminer.js
@@ -74,14 +74,17 @@ CPUMiner.prototype._init = function _init() {
     self.logger.debug('Raw: %s', block.toRaw().toString('hex'));
   });
 
-  this.on('status', function(stat) {
+  this.on('status', function(job, hashes, hashrate) {
+    var attempt = job.attempt;
+    var tip = util.revHex(attempt.prevBlock);
+
     self.logger.info(
-      'CPUMiner: hashrate=%dkhs hashes=%d target=%d height=%d best=%s',
-      stat.hashrate / 1000 | 0,
-      stat.hashes,
-      stat.target,
-      stat.height,
-      stat.best);
+      'Miner: hashrate=%dkhs hashes=%d target=%d height=%d best=%s',
+      Math.floor(hashrate / 1000),
+      hashes,
+      attempt.bits,
+      attempt.height,
+      tip);
   });
 };
 
@@ -123,7 +126,7 @@ CPUMiner.prototype._close = co(function* close() {
 CPUMiner.prototype.start = co(function* start() {
   var block, entry;
 
-  assert(!this.running, 'CPUMiner is already running.');
+  assert(!this.running, 'Miner is already running.');
 
   this.running = true;
   this.stopping = false;
@@ -188,8 +191,8 @@ CPUMiner.prototype.start = co(function* start() {
  */
 
 CPUMiner.prototype.stop = co(function* stop() {
-  assert(this.running, 'CPUMiner is not running.');
-  assert(!this.stopping, 'CPUMiner is already stopping.');
+  assert(this.running, 'Miner is not running.');
+  assert(!this.stopping, 'Miner is already stopping.');
 
   this.stopping = true;
 
@@ -404,13 +407,7 @@ CPUMiner.prototype.iterate = function iterate(job) {
  */
 
 CPUMiner.prototype.sendStatus = function sendStatus(job, nonce) {
-  this.emit('status', {
-    target: job.attempt.bits,
-    hashes: job.getHashes(),
-    hashrate: job.getRate(nonce),
-    height: job.attempt.height,
-    best: util.revHex(job.attempt.prevBlock)
-  });
+  this.emit('status', job, job.getHashes(nonce), job.getRate(nonce));
 };
 
 /**
@@ -500,14 +497,11 @@ CPUJob.prototype.refresh = function refresh() {
  * Increment the extraNonce.
  */
 
-CPUJob.prototype.updateNonce = function() {
-  // Overflow the nonce and increment the extraNonce.
-  this.nonce1++;
-
-  // Wrap at 4 bytes.
-  if (this.nonce1 === 0xffffffff) {
-    this.nonce1 = 0;
-    this.nonce2++;
+CPUJob.prototype.updateNonce = function updateNonce() {
+  this.nonce2++;
+  if (this.nonce2 === 0x100000000) {
+    this.nonce2 = 0;
+    this.nonce1++;
   }
 };
 
@@ -515,7 +509,7 @@ CPUJob.prototype.updateNonce = function() {
  * Destroy the job.
  */
 
-CPUJob.prototype.destroy = function() {
+CPUJob.prototype.destroy = function destroy() {
   assert(!this.destroyed, 'Job already destroyed.');
   this.destroyed = true;
 };
@@ -525,8 +519,8 @@ CPUJob.prototype.destroy = function() {
  * @returns {Number}
  */
 
-CPUJob.prototype.getHashes = function() {
-  return this.iterations * 0xffffffff + this.block.nonce;
+CPUJob.prototype.getHashes = function getHashes(nonce) {
+  return this.iterations * 0xffffffff + nonce;
 };
 
 /**
@@ -534,8 +528,8 @@ CPUJob.prototype.getHashes = function() {
  * @returns {Number}
  */
 
-CPUJob.prototype.getRate = function(nonce) {
-  return (nonce / (util.now() - this.begin)) | 0;
+CPUJob.prototype.getRate = function getRate(nonce) {
+  return Math.floor(nonce / (util.now() - this.begin));
 };
 
 /**
@@ -544,7 +538,7 @@ CPUJob.prototype.getRate = function(nonce) {
  * @param {CoinView} view
  */
 
-CPUJob.prototype.addTX = function(tx, view) {
+CPUJob.prototype.addTX = function addTX(tx, view) {
   return this.attempt.addTX(tx, view);
 };
 
@@ -555,7 +549,7 @@ CPUJob.prototype.addTX = function(tx, view) {
  * @param {CoinView?} view
  */
 
-CPUJob.prototype.pushTX = function(tx, view) {
+CPUJob.prototype.pushTX = function pushTX(tx, view) {
   return this.attempt.pushTX(tx, view);
 };