1 files changed, 2 insertions, 1 deletions
diff --git a/test/simple/test-fs-readfile-error.js b/test/simple/test-fs-readfile-error.js
index 72e1e2e7f..67034cd87 100644
--- a/test/simple/test-fs-readfile-error.js
+++ b/test/simple/test-fs-readfile-error.js
@@ -23,13 +23,14 @@ var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
 var path = require('path');
+var util = require('util');
 
 var callbacks = 0;
 
 function test(env, cb) {
   var filename = path.join(common.fixturesDir, 'test-fs-readfile-error.js');
   var execPath = process.execPath + ' ' + filename;
-  var options = { env: env || {} };
+  var options = { env: util._extend(process.env, env || {}) };
   exec(execPath, options, function(err, stdout, stderr) {
     assert(err);
     assert.equal(stdout, '');