diff --git a/lib/wallet/walletdb.js b/lib/wallet/walletdb.js
index bf50a067..35e58e02 100644
--- a/lib/wallet/walletdb.js
+++ b/lib/wallet/walletdb.js
@@ -601,7 +601,8 @@ WalletDB.prototype.getDepth = co(function* getDepth() {
   iter = this.db.iterator({
     gte: layout.w(0x00000000),
     lte: layout.w(0xffffffff),
-    reverse: true
+    reverse: true,
+    limit: 1
   });
 
   item = yield iter.next();