diff --git a/lib/log.js b/lib/log.js
index e8a7858..f733971 100644
--- a/lib/log.js
+++ b/lib/log.js
@@ -1,8 +1,6 @@
 // Generated by IcedCoffeeScript 108.0.12
 (function() {
-  var L, Logger, default_level, default_logger_class, stringify, util;
-
-  util = require('util');
+  var L, Logger, default_level, default_logger_class, stringify;
 
   exports.levels = L = {
     NONE: 0,
@@ -21,7 +19,7 @@
       return "";
     } else if (o instanceof Uint8Array) {
       return new TextDecoder().decode(o);
-    } else if (util.isError(o)) {
+    } else if (Error.isError(o)) {
       return o.toString();
     } else {
       return "" + o;
diff --git a/src/log.iced b/src/log.iced
index 1ee719f..f8e0cfb 100644
--- a/src/log.iced
+++ b/src/log.iced
@@ -1,6 +1,3 @@
-
-util = require 'util'
-
 #
 # The standard logger for saying that things went wrong, or state changed,
 # inside the RPC system.  You can of course change this to be whatever you'd
@@ -23,7 +20,7 @@ default_level = L.INFO
 stringify = (o) ->
   if not o? then ""
   else if o instanceof Uint8Array then new TextDecoder().decode(o)
-  else if util.isError(o) then o.toString()
+  else if Error.isError(o) then o.toString()
   else ("" + o)
 
 ##=======================================================================
diff --git a/test/all.iced b/test/all.iced
index 493c95a..eb6f082 100644
--- a/test/all.iced
+++ b/test/all.iced
@@ -6,7 +6,6 @@ colors = require 'colors'
 deep_equal = require 'deep-equal'
 {debug,log,Logger,RobustTransport,Transport,Client} = require '../src/main'
 iced = require('../src/iced').runtime
-util = require 'util'
 
 ##-----------------------------------------------------------------------
 
@@ -71,7 +70,7 @@ class TestCase
   logger : () -> @_global.logger()
 
   search : (s, re, msg) ->
-    if util.isError(s)
+    if Error.isError(s)
       s = s.toString()
     @assert (s? and s.search(re) >= 0), msg