diff --git a/Classes/EventListener/RenderedEventListener.php b/Classes/EventListener/RenderedEventListener.php
index 0ebd7ca..a8a368b 100644
--- a/Classes/EventListener/RenderedEventListener.php
+++ b/Classes/EventListener/RenderedEventListener.php
@@ -7,17 +7,15 @@
 
 class RenderedEventListener
 {
-    protected MinifyService $minifyService;
-
-    public function __construct(MinifyService $minifyService)
+    public function __construct(protected MinifyService $minifyService)
     {
-        $this->minifyService = $minifyService;
     }
 
     public function __invoke(RenderedEvent $event): void
     {
         $html = $event->getHtml();
         $html = $this->minifyService->minify($html);
+
         $event->setHtml($html);
     }
 }
diff --git a/rector.php b/rector.php
index 2da6bd0..86a0c08 100644
--- a/rector.php
+++ b/rector.php
@@ -5,6 +5,7 @@
 use PLUS\GrumPHPConfig\RectorSettings;
 use Rector\Config\RectorConfig;
 use Rector\Caching\ValueObject\Storage\FileCacheStorage;
+use Rector\Privatization\Rector\Class_\FinalizeClassesWithoutChildrenRector;
 
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->parallel();
@@ -31,7 +32,7 @@
         [
             ...RectorSettings::skip(),
             ...RectorSettings::skipTypo3(),
-
+            FinalizeClassesWithoutChildrenRector::class,
             /**
              * rector should not touch these files
              */