diff --git a/lib/bcoin/tx.js b/lib/bcoin/tx.js
index 95ea25bc..7b15e799 100644
--- a/lib/bcoin/tx.js
+++ b/lib/bcoin/tx.js
@@ -293,7 +293,7 @@ TX.fromJSON = function fromJSON(json) {
   assert.equal(json.type, 'tx');
 
   var raw = utils.toArray(json.tx, 'hex');
-  tx = new TX(new bcoin.protocol.parser().parseTX(raw));
+  var tx = new TX(new bcoin.protocol.parser().parseTX(raw));
   tx.ts = json.ts;
   tx.block = json.block || null;
   tx.ps = json.ps;