diff --git a/src/pthreads.php b/src/pthreads.php
index 50756813c..4dccfd245 100644
--- a/src/pthreads.php
+++ b/src/pthreads.php
@@ -23,7 +23,7 @@ define("ASYNC_CURL_GET", 1);
 define("ASYNC_CURL_POST", 2);
 define("ASYNC_FUNCTION", 3);
 
-class StackableArray extends \Stackable{
+class StackableArray extends \Threaded{
 	public function __construct(){
 		foreach(func_get_args() as $n => $value){
 			if(is_array($value)){