diff --git a/index.js b/index.js
index c151b60..e99eaab 100644
--- a/index.js
+++ b/index.js
@@ -4,7 +4,7 @@ const SHA3    = require('sha3');
 const bignum  = require('bignum');
 const bitcoin = require('bitcoinjs-lib');
 const varuint = require('varuint-bitcoin');
-const crypto  = require('crypt');
+const crypto  = require('crypto');
 const fastMerkleRoot = require('merkle-lib/fastRoot');
 const promise = require('promise');
 const merklebitcoin = promise.denodeify(require('merkle-bitcoin'));