diff --git a/Admin/Installer.php b/Admin/Installer.php
index fc12462..a7129e1 100644
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -30,7 +30,7 @@ use phpOMS\System\File\Local\Directory;
  * @link    https://orange-management.org
  * @since   1.0.0
  */
-class Installer extends InstallerAbstract
+final class Installer extends InstallerAbstract
 {
     /**
      * {@inheritdoc}