diff --git a/lib/crypto/ec-secp256k1.js b/lib/crypto/ec-secp256k1.js
index 8ec88d65..210a4123 100644
--- a/lib/crypto/ec-secp256k1.js
+++ b/lib/crypto/ec-secp256k1.js
@@ -8,7 +8,6 @@
 'use strict';
 
 var assert = require('assert');
-var util = require('../utils/util');
 var backend = require('./backend');
 var secp256k1 = require('secp256k1');
 
diff --git a/lib/primitives/keyring.js b/lib/primitives/keyring.js
index 4990bec2..63c3343c 100644
--- a/lib/primitives/keyring.js
+++ b/lib/primitives/keyring.js
@@ -8,7 +8,6 @@
 'use strict';
 
 var assert = require('assert');
-var util = require('../utils/util');
 var encoding = require('../utils/encoding');
 var crypto = require('../crypto/crypto');
 var Network = require('../protocol/network');