diff --git a/lib/bcoin/utils.js b/lib/bcoin/utils.js
index ba505641..fc718da3 100644
--- a/lib/bcoin/utils.js
+++ b/lib/bcoin/utils.js
@@ -181,7 +181,8 @@ utils.writeU64 = function writeU64(dst, num, off) {
     off = 0;
 
   num = new bn(num).maskn(64).toArray();
-  while (num.length < 8) num.unshift(0);
+  while (num.length < 8)
+    num.unshift(0);
 
   num.reverse().forEach(function(ch) {
     dst[off++] = ch;
@@ -213,7 +214,8 @@ utils.writeU64BE = function writeU64BE(dst, num, off) {
     off = 0;
 
   num = new bn(num).maskn(64).toArray();
-  while (num.length < 8) num.unshift(0);
+  while (num.length < 8)
+    num.unshift(0);
 
   num.forEach(function(ch) {
     dst[off++] = ch;