diff --git a/lib/execjs/support/node_runner.js b/lib/execjs/support/node_runner.js
index ab0c6ec..3dc4757 100644
--- a/lib/execjs/support/node_runner.js
+++ b/lib/execjs/support/node_runner.js
@@ -1,4 +1,4 @@
-(function(program, execJS) { execJS(program) })(function(global, module, exports, require, console, setTimeout, setInterval, clearTimeout, clearInterval, setImmediate, clearImmediate) { #{source}
+(function(program, execJS) { execJS(program) })(function(global, process, module, exports, require, console, setTimeout, setInterval, clearTimeout, clearInterval, setImmediate, clearImmediate) { #{source}
 }, function(program) {
   var output, print = function(string) {
     process.stdout.write('' + string);
diff --git a/test/test_execjs.rb b/test/test_execjs.rb
index 7fd967f..061be48 100644
--- a/test/test_execjs.rb
+++ b/test/test_execjs.rb
@@ -237,6 +237,10 @@ class TestExecJS < Test
     assert ExecJS.eval("typeof global == 'undefined'")
   end
 
+  def test_node_process_is_undefined
+    assert ExecJS.eval("typeof process == 'undefined'")
+  end
+
   def test_commonjs_vars_are_undefined
     assert ExecJS.eval("typeof module == 'undefined'")
     assert ExecJS.eval("typeof exports == 'undefined'")