diff --git a/lib/bcoin/walletdb.js b/lib/bcoin/walletdb.js
index 968f5daa..31214dd6 100644
--- a/lib/bcoin/walletdb.js
+++ b/lib/bcoin/walletdb.js
@@ -15,7 +15,6 @@ var constants = bcoin.protocol.constants;
 var BufferReader = require('./reader');
 var BufferWriter = require('./writer');
 var TXDB = require('./txdb');
-var keyTypes = bcoin.keyring.types;
 
 /*
  * Database Layout:
@@ -281,7 +280,7 @@ WalletDB.prototype._close = function close(callback) {
  */
 
 WalletDB.prototype.getDepth = function getDepth(callback) {
-  var iter, parts, depth;
+  var iter, depth;
 
   // This may seem like a strange way to do
   // this, but updating a global state when
@@ -1254,7 +1253,6 @@ WalletDB.prototype.setTip = function setTip(hash, height, callback) {
  */
 
 WalletDB.prototype.writeBlock = function writeBlock(block, matches, callback) {
-  var self = this;
   var batch = this.db.batch();
   var i, hash, wallets;
 
@@ -1280,7 +1278,6 @@ WalletDB.prototype.writeBlock = function writeBlock(block, matches, callback) {
  */
 
 WalletDB.prototype.unwriteBlock = function unwriteBlock(block, callback) {
-  var self = this;
   var batch = this.db.batch();
   var prev = new WalletBlock(block.prevBlock, block.height - 1);