diff --git a/lib/bcoin/chaindb.js b/lib/bcoin/chaindb.js
index 0a44eaee..c3b038d3 100644
--- a/lib/bcoin/chaindb.js
+++ b/lib/bcoin/chaindb.js
@@ -82,7 +82,7 @@ function ChainDB(chain, options) {
   // We add a padding of 100 for forked chains,
   // reorgs, chain locator creation and the bip34
   // check.
-  this.cacheWindow = (network.pow.retargetInterval + 1) * 4 + 100;
+  this.cacheWindow = (network.pow.retargetInterval + 1) * 2 + 100;
 
   this.coinCache = new NullCache(100000);
   this.cacheHash = new bcoin.lru(this.cacheWindow);