diff --git a/Creational/Pool/WorkerPool.php b/Creational/Pool/WorkerPool.php
index 82426a9..6b4f3d8 100644
--- a/Creational/Pool/WorkerPool.php
+++ b/Creational/Pool/WorkerPool.php
@@ -20,7 +20,7 @@ class WorkerPool implements Countable
 
     public function get(): StringReverseWorker
     {
-        if (count($this->freeWorkers) == 0) {
+        if (count($this->freeWorkers) === 0) {
             $worker = new StringReverseWorker();
         } else {
             $worker = array_pop($this->freeWorkers);
@@ -31,10 +31,9 @@ class WorkerPool implements Countable
         return $worker;
     }
 
-    public function dispose(StringReverseWorker $worker)
+    public function dispose(StringReverseWorker $worker): void
     {
         $key = spl_object_hash($worker);
-
         if (isset($this->occupiedWorkers[$key])) {
             unset($this->occupiedWorkers[$key]);
             $this->freeWorkers[$key] = $worker;