diff --git a/lib/wallet/walletdb.js b/lib/wallet/walletdb.js
index d1adc4fc..0f0274f1 100644
--- a/lib/wallet/walletdb.js
+++ b/lib/wallet/walletdb.js
@@ -143,11 +143,11 @@ function WalletDB(options) {
   this.network = Network.get(options.network);
   this.fees = options.fees;
   this.logger = options.logger || Logger.global;
-  this.wallets = {};
 
   this.tip = this.network.genesis.hash;
   this.height = 0;
   this.depth = 0;
+  this.wallets = {};
 
   // We need one read lock for `get` and `create`.
   // It will hold locks specific to wallet ids.
@@ -232,6 +232,7 @@ WalletDB.prototype._close = co(function* close() {
     key = keys[i];
     wallet = this.wallets[key];
     yield wallet.destroy();
+    delete this.wallets[key];
   }
 
   yield this.db.close();