diff --git a/src/Nacmartin/PhpExecJs/Runtime/ExternalRuntime.php b/src/Nacmartin/PhpExecJs/Runtime/ExternalRuntime.php
index f12052a..fee545e 100644
--- a/src/Nacmartin/PhpExecJs/Runtime/ExternalRuntime.php
+++ b/src/Nacmartin/PhpExecJs/Runtime/ExternalRuntime.php
@@ -120,7 +120,7 @@ public function call($function, $arguments = array())
     public function embedInRuntime($code)
     {
         $embedded = <<<JS
-(function(program, execJS) { execJS(program) })(function(global, module, exports, require, console, setTimeout, setInterval, clearTimeout, clearInterval, setImmediate, clearImmediate) { $code;
+(function(program, execJS) { execJS(program) })(function(global, module, exports, require, console, setTimeout, setInterval, clearTimeout, clearInterval,  clearImmediate) { $code;
 }, function(program) {
   var output, print = function(string) {
     process.stdout.write('' + string);