diff --git a/lib/chain/chain.js b/lib/chain/chain.js
index cf447400..7333f344 100644
--- a/lib/chain/chain.js
+++ b/lib/chain/chain.js
@@ -707,7 +707,7 @@ Chain.prototype.verifyInputs = co(function* verifyInputs(block, prev, state) {
  * @returns {Number}
  */
 
-Chain.prototype._getCachedHeight = function _getCachedHeight(hash) {
+Chain.prototype.checkHeight = function checkHeight(hash) {
   if (this.db.hasCache(hash))
     return this.db.getCache(hash).height;
 
diff --git a/lib/chain/chaindb.js b/lib/chain/chaindb.js
index 9f9184e7..f20dddd5 100644
--- a/lib/chain/chaindb.js
+++ b/lib/chain/chaindb.js
@@ -374,16 +374,6 @@ ChainDB.prototype.commit = co(function* commit() {
   this.cacheHeight.commit();
 });
 
-/**
- * Add an entry to the LRU cache.
- * @param {ChainEntry} entry
- */
-
-ChainDB.prototype.addCache = function addCache(entry) {
-  this.cacheHash.set(entry.hash, entry);
-  this.cacheHeight.set(entry.height, entry);
-};
-
 /**
  * Test the cache for a present entry hash or height.
  * @param {Hash|Number} hash - Hash or height.
diff --git a/lib/net/peer.js b/lib/net/peer.js
index ac18d181..3b35d4a3 100644
--- a/lib/net/peer.js
+++ b/lib/net/peer.js
@@ -2286,7 +2286,7 @@ Peer.prototype.sendGetHeaders = function sendGetHeaders(locator, stop) {
     this.hostname);
 
   if (packet.locator.length > 0) {
-    height = this.chain._getCachedHeight(packet.locator[0]);
+    height = this.chain.checkHeight(packet.locator[0]);
     hash = utils.revHex(packet.locator[0]);
   }
 
@@ -2314,7 +2314,7 @@ Peer.prototype.sendGetBlocks = function getBlocks(locator, stop) {
     this.hostname);
 
   if (packet.locator.length > 0) {
-    height = this.chain._getCachedHeight(packet.locator[0]);
+    height = this.chain.checkHeight(packet.locator[0]);
     hash = utils.revHex(packet.locator[0]);
   }
 
diff --git a/lib/wallet/walletdb.js b/lib/wallet/walletdb.js
index 97a81703..009132ca 100644
--- a/lib/wallet/walletdb.js
+++ b/lib/wallet/walletdb.js
@@ -541,11 +541,11 @@ WalletDB.prototype.wipe = co(function* wipe() {
   }
 
   // All block records (c -- old)
-  gte = new Buffer(33);
+  gte = new Buffer(5);
   gte.fill(0);
   gte[0] = 0x63;
 
-  lte = new Buffer(33);
+  lte = new Buffer(5);
   lte.fill(255);
   lte[0] = 0x63;