diff --git a/src/SessionHandler.php b/src/SessionHandler.php
index 3d87dde..9da0d7a 100644
--- a/src/SessionHandler.php
+++ b/src/SessionHandler.php
@@ -26,13 +26,6 @@
  */
 class SessionHandler implements \SessionHandlerInterface
 {
-    /**
-     * database connection
-     * @var     \DavidLienhard\Database\DatabaseInterface
-     */
-    private $db;
-
-
     /**
      * sets the given dependencies
      *
@@ -44,9 +37,8 @@ class SessionHandler implements \SessionHandlerInterface
      * @return          void
      * @uses            self::$db
      */
-    public function __construct(DatabaseInterface $db)
+    public function __construct(private DatabaseInterface $db)
     {
-        $this->db = $db;
     }
 
     /**