diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index 22270349..63e9cda2 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -917,6 +917,8 @@ script.spendable = function spendable(s, lockTime) {
 };
 
 script.isPubkey = function isPubkey(s, key) {
+  var res;
+
   s = script.subscript(s);
 
   if (script.lockTime(s))
@@ -925,8 +927,9 @@ script.isPubkey = function isPubkey(s, key) {
   if (s.length !== 2)
     return false;
 
-  var match = Array.isArray(s[0]) && s[1] === 'checksig';
-  if (!match)
+  res = Array.isArray(s[0]) && s[1] === 'checksig';
+
+  if (!res)
     return false;
 
   if (key)
@@ -936,6 +939,8 @@ script.isPubkey = function isPubkey(s, key) {
 };
 
 script.isPubkeyhash = function isPubkeyhash(s, hash) {
+  var res;
+
   s = script.subscript(s);
 
   if (script.lockTime(s))
@@ -944,13 +949,13 @@ script.isPubkeyhash = function isPubkeyhash(s, hash) {
   if (s.length !== 5)
     return false;
 
-  var match = s[0] === 'dup'
+  res = s[0] === 'dup'
     && s[1] === 'hash160'
     && Array.isArray(s[2])
     && s[3] === 'eqverify'
     && s[4] === 'checksig';
 
-  if (!match)
+  if (!res)
     return false;
 
   if (hash)
@@ -1065,13 +1070,15 @@ script.standardInput = function standardInput(s) {
 };
 
 script.isPubkeyInput = function isPubkeyInput(s, key, tx, i) {
+  var res;
+
   s = script.subscript(s);
 
   if (s.length !== 1 || !Array.isArray(s[0]))
     return false;
 
-  // var res = script.isValidSig(s[0]);
-  var res = 9 <= s[0].length && s[0].length <= 73;
+  // res = script.isValidSig(s[0]);
+  res = 9 <= s[0].length && s[0].length <= 73;
   if (!res)
     return false;
 
@@ -1082,15 +1089,17 @@ script.isPubkeyInput = function isPubkeyInput(s, key, tx, i) {
 };
 
 script.isPubkeyhashInput = function isPubkeyhashInput(s, key) {
+  var res;
+
   s = script.subscript(s);
 
   if (s.length !== 2 || !Array.isArray(s[0]) || !Array.isArray(s[1]))
     return false;
 
-  // var res = script.isValidSig(s[0])
+  // res = script.isValidSig(s[0])
   //   && 33 <= s[1].length && s[1].length <= 65;
 
-  var res = 9 <= s[0].length && s[0].length <= 73
+  res = 9 <= s[0].length && s[0].length <= 73
     && 33 <= s[1].length && s[1].length <= 65;
 
   if (!res)