diff --git a/lib/bcoin/utils.js b/lib/bcoin/utils.js
index cd122794..fff7ffce 100644
--- a/lib/bcoin/utils.js
+++ b/lib/bcoin/utils.js
@@ -1285,14 +1285,15 @@ utils.U32 = new bn(0xffffffff);
 utils.U64 = new bn('ffffffffffffffff', 'hex');
 
 /**
- * Create a 64 bit nonce.
+ * Create an 8 byte nonce.
  * @returns {BN}
  */
 
-utils.nonce = function nonce() {
-  var nonce = utils.U64.clone();
-  nonce.imuln(Math.random());
-  return nonce;
+utils.nonce = function _nonce() {
+  var nonce = new Buffer(8);
+  utils.writeU32(nonce, Math.random() * 0x100000000 | 0, 0);
+  utils.writeU32(nonce, Math.random() * 0x100000000 | 0, 4);
+  return new bn(nonce);
 };
 
 //