diff --git a/lib/blockchain/chaindb.js b/lib/blockchain/chaindb.js
index f8552544..d5c31dc8 100644
--- a/lib/blockchain/chaindb.js
+++ b/lib/blockchain/chaindb.js
@@ -1216,6 +1216,7 @@ ChainDB.prototype.scan = async function scan(start, filter, iter) {
   while (entry) {
     let block = await this.getBlock(entry.hash);
     let txs = [];
+
     total++;
 
     if (!block) {
@@ -1234,15 +1235,15 @@ ChainDB.prototype.scan = async function scan(start, filter, iter) {
       let tx = block.txs[i];
       let found = false;
 
-      for (let i = 0; i < tx.outputs.length; i++) {
-        let output = tx.outputs[i];
+      for (let j = 0; j < tx.outputs.length; j++) {
+        let output = tx.outputs[j];
         let hash = output.getHash();
 
         if (!hash)
           continue;
 
         if (filter.test(hash)) {
-          let prevout = Outpoint.fromTX(tx, i);
+          let prevout = Outpoint.fromTX(tx, j);
           filter.add(prevout.toRaw());
           found = true;
         }