diff --git a/lib/chain/chaindb.js b/lib/chain/chaindb.js
index 60d21d43..c4ce22d4 100644
--- a/lib/chain/chaindb.js
+++ b/lib/chain/chaindb.js
@@ -1153,7 +1153,6 @@ ChainDB.prototype.scan = co(function* scan(start, filter, iter) {
           prevout = input.prevout;
           if (filter.test(prevout.hash, 'hex')) {
             txs.push(tx);
-            filter.add(tx.hash());
             found = true;
             break;
           }
diff --git a/lib/http/server.js b/lib/http/server.js
index 45dba5fc..ca87df01 100644
--- a/lib/http/server.js
+++ b/lib/http/server.js
@@ -1570,10 +1570,8 @@ ClientSocket.prototype.testFilter = function testFilter(tx) {
     for (i = 0; i < tx.inputs.length; i++) {
       input = tx.inputs[i];
       prevout = input.prevout;
-      if (this.filter.test(prevout.hash, 'hex')) {
-        this.filter.add(tx.hash());
+      if (this.filter.test(prevout.hash, 'hex'))
         return true;
-      }
     }
   }