diff --git a/lib/mempool/mempool.js b/lib/mempool/mempool.js
index 18af6ff5..bbe6870a 100644
--- a/lib/mempool/mempool.js
+++ b/lib/mempool/mempool.js
@@ -15,7 +15,6 @@ var crypto = require('../crypto/crypto');
 var errors = require('../btc/errors');
 var VerifyError = errors.VerifyError;
 var VerifyResult = errors.VerifyResult;
-var flags = constants.flags;
 var Bloom = require('../utils/bloom');
 var Address = require('../primitives/address');
 var Coin = require('../primitives/coin');
@@ -799,14 +798,11 @@ Mempool.prototype._addTX = co(function* _addTX(tx) {
  */
 
 Mempool.prototype.verify = co(function* verify(entry, view) {
-  var tx = entry.tx;
   var height = this.chain.height + 1;
-  var lockFlags = flags.STANDARD_LOCKTIME_FLAGS;
-  var flags1 = flags.STANDARD_VERIFY_FLAGS;
-  var flags2 = flags1 & ~(flags.VERIFY_WITNESS | flags.VERIFY_CLEANSTACK);
-  var flags3 = flags1 & ~flags.VERIFY_CLEANSTACK;
-  var mandatory = flags.MANDATORY_VERIFY_FLAGS;
+  var lockFlags = constants.flags.STANDARD_LOCKTIME_FLAGS;
+  var flags = constants.flags.STANDARD_VERIFY_FLAGS;
   var ret = new VerifyResult();
+  var tx = entry.tx;
   var now, minFee, result;
 
   // Verify sequence locks.
@@ -838,7 +834,7 @@ Mempool.prototype.verify = co(function* verify(entry, view) {
   }
 
   // Annoying process known as sigops counting.
-  if (tx.getSigopsCost(view, flags) > constants.tx.MAX_SIGOPS_COST) {
+  if (entry.sigops > constants.tx.MAX_SIGOPS_COST) {
     throw new VerifyError(tx,
       'nonstandard',
       'bad-txns-too-many-sigops',
@@ -896,13 +892,15 @@ Mempool.prototype.verify = co(function* verify(entry, view) {
 
   // Script verification.
   try {
-    yield this.verifyInputs(tx, view, flags1);
+    yield this.verifyInputs(tx, view, flags);
   } catch (err) {
     if (tx.hasWitness())
       throw err;
 
     // Try without segwit and cleanstack.
-    result = yield this.verifyResult(tx, view, flags2);
+    flags &= ~constants.flags.VERIFY_WITNESS;
+    flags &= ~constants.flags.VERIFY_CLEANSTACK;
+    result = yield this.verifyResult(tx, view, flags);
 
     // If it failed, the first verification
     // was the only result we needed.
@@ -911,7 +909,8 @@ Mempool.prototype.verify = co(function* verify(entry, view) {
 
     // If it succeeded, segwit may be causing the
     // failure. Try with segwit but without cleanstack.
-    result = yield this.verifyResult(tx, view, flags3);
+    flags |= constants.flags.VERIFY_CLEANSTACK;
+    result = yield this.verifyResult(tx, view, flags);
 
     // Cleanstack was causing the failure.
     if (result)
@@ -924,7 +923,8 @@ Mempool.prototype.verify = co(function* verify(entry, view) {
 
   // Paranoid checks.
   if (this.paranoid) {
-    result = yield this.verifyResult(tx, view, mandatory);
+    flags = constants.flags.MANDATORY_VERIFY_FLAGS;
+    result = yield this.verifyResult(tx, view, flags);
     assert(result, 'BUG: Verify failed for mandatory but not standard.');
   }
 });
@@ -1632,7 +1632,7 @@ Mempool.prototype.verifyFinal = function verifyFinal(tx, flags) {
 Mempool.prototype.trackEntry = function trackEntry(entry, view) {
   var tx = entry.tx;
   var hash = tx.hash('hex');
-  var i, input, output, key, coin;
+  var i, input, output, key;
 
   assert(!this.tx[hash]);
   this.tx[hash] = entry;
@@ -1717,8 +1717,6 @@ Mempool.prototype.untrackEntry = function untrackEntry(entry) {
  * Recursively remove spenders of a transaction.
  * @private
  * @param {MempoolEntry} entry
- * @param {Boolean} limit
- * @returns {Promise}
  */
 
 Mempool.prototype.removeSpenders = function removeSpenders(entry) {
@@ -1740,9 +1738,7 @@ Mempool.prototype.removeSpenders = function removeSpenders(entry) {
  * Recursively remove double spenders
  * of a mined transaction's outpoints.
  * @private
- * @param {MempoolEntry} entry
- * @param {Boolean} limit
- * @returns {Promise}
+ * @param {TX} tx
  */
 
 Mempool.prototype.removeDoubleSpends = function removeDoubleSpends(tx) {
@@ -1783,9 +1779,7 @@ Mempool.prototype.memUsage = function memUsage(tx) {
   mem += 80; // _hash
   mem += 88; // _hhash
   mem += 80; // _raw
-
-  if (tx._whash)
-    mem += 80; // _whash
+  mem += 80; // _whash
 
   mem += 32; // input array
 
diff --git a/lib/mempool/mempoolentry.js b/lib/mempool/mempoolentry.js
index 92654b45..47bcf3f0 100644
--- a/lib/mempool/mempoolentry.js
+++ b/lib/mempool/mempoolentry.js
@@ -82,9 +82,10 @@ MempoolEntry.fromOptions = function fromOptions(options) {
  */
 
 MempoolEntry.prototype.fromTX = function fromTX(tx, view, height) {
+  var flags = constants.flags.STANDARD_VERIFY_FLAGS;
   var priority = tx.getPriority(view, height);
   var value = tx.getChainValue(view, height);
-  var sigops = tx.getSigopsCost(view);
+  var sigops = tx.getSigopsCost(view, flags);
   var dependencies = false;
   var size = tx.getVirtualSize();
   var fee = tx.getFee(view);