diff --git a/lib/blockchain/coinview.js b/lib/blockchain/coinview.js
index 766d2519..63829582 100644
--- a/lib/blockchain/coinview.js
+++ b/lib/blockchain/coinview.js
@@ -6,7 +6,6 @@
 
 'use strict';
 
-var assert = require('assert');
 var co = require('../utils/co');
 var Coins = require('./coins');
 var UndoCoins = require('./undocoins');