diff --git a/Creational/Singleton/Singleton.php b/Creational/Singleton/Singleton.php
index c7c0976..386b3f5 100644
--- a/Creational/Singleton/Singleton.php
+++ b/Creational/Singleton/Singleton.php
@@ -36,7 +36,7 @@ final class Singleton
     /**
      * prevent from being unserialized (which would create a second instance of it)
      */
-    private function __wakeup()
+    public function __wakeup()
     {
     }
 }