diff --git a/lib/bcoin.js b/lib/bcoin.js
index e2426e9b..767a256a 100644
--- a/lib/bcoin.js
+++ b/lib/bcoin.js
@@ -45,6 +45,11 @@ if (bcoin.fs) {
   }
 }
 
+if (bcoin.fs) {
+  bcoin._debug = bcoin.fs.createWriteStream(
+    bcoin.dir + '/debug.log', { flags: 'w' });
+}
+
 bcoin.ecdsa = bcoin.elliptic.ec('secp256k1');
 assert(!bcoin.ecdsa.signature);
 bcoin.ecdsa.signature = require('elliptic/lib/elliptic/ec/signature');
diff --git a/lib/bcoin/utils.js b/lib/bcoin/utils.js
index 44d1c307..ed669904 100644
--- a/lib/bcoin/utils.js
+++ b/lib/bcoin/utils.js
@@ -743,17 +743,31 @@ utils._inspect = function _inspect(obj, color) {
     : obj;
 };
 
-utils.print = function print(msg) {
-  return typeof msg === 'object'
-    ? process.stdout.write(utils._inspect(msg, !!process.stdout.isTTY) + '\n')
-    : console.log.apply(console, arguments);
+utils.format = function format(args, color) {
+  color = color ? process.stdout.isTTY : false;
+  return typeof args[0] === 'object'
+    ? utils._inspect(args[0], color) + '\n'
+    : util.format.apply(util, args) + '\n';
+};
+
+utils.print = function print() {
+  var args = Array.prototype.slice.call(arguments);
+  return process.stdout.write(utils.format(args, true));
 };
 
 utils.debug = function debug() {
-  if (!bcoin.debug)
-    return;
+  var args = Array.prototype.slice.call(arguments);
+  var msg;
 
-  return utils.print.apply(null, arguments);
+  if (bcoin.debug) {
+    msg = utils.format(args, true);
+    process.stdout.write(msg);
+  }
+
+  if (bcoin._debug) {
+    msg = utils.format(args, false);
+    bcoin._debug.write(msg);
+  }
 };
 
 utils.merge = function merge(target) {