diff --git a/System/File/Ftp/FtpStorage.php b/System/File/Ftp/FtpStorage.php
index a681391fd..a96821930 100644
--- a/System/File/Ftp/FtpStorage.php
+++ b/System/File/Ftp/FtpStorage.php
@@ -32,9 +32,19 @@ class FtpStorage extends StorageAbstract
 {
     private $con = null;
 
-    public function __construct(string $uri, int $port = 21, bool $mode = true, string $login = null, string $pass = null, bool $ssl = false)
+    private static $instance = null;
+
+    public function __construct() {
+        
+    }
+
+    public static function getInstance() : StorageAbstract
     {
-        $this->connect($uri, $port = 21, $mode, $login = null, $pass = null, $ssl = false);
+        if(!isset(self::$instance)) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
     }
 
     public function connect(string $uri, int $port = 21, bool $mode = true, string $login = null, string $pass = null, bool $ssl = false) : bool
diff --git a/System/File/Local/LocalStorage.php b/System/File/Local/LocalStorage.php
index 3cce69807..6604da447 100644
--- a/System/File/Local/LocalStorage.php
+++ b/System/File/Local/LocalStorage.php
@@ -30,6 +30,21 @@ use phpOMS\System\File\StorageAbstract;
  */
 class LocalStorage extends StorageAbstract
 {
+    private static $instance = null;
+
+    public function __construct() {
+        
+    }
+
+    public static function getInstance() : StorageAbstract
+    {
+        if(!isset(self::$instance)) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/System/File/StorageAbstract.php b/System/File/StorageAbstract.php
index fc6793f66..d1fb38838 100644
--- a/System/File/StorageAbstract.php
+++ b/System/File/StorageAbstract.php
@@ -28,14 +28,6 @@ namespace phpOMS\System\File;
  */
 abstract class StorageAbstract implements DirectoryInterface, FileInterface
 {
-    /**
-     * Singleton instance.
-     *
-     * @var StorageAbstract
-     * @since 1.0.0
-     */
-    protected static $instance = null;
-
     /**
      * Storage type.
      *
@@ -60,15 +52,7 @@ abstract class StorageAbstract implements DirectoryInterface, FileInterface
      *
      * @since  1.0.0
      */
-    public static function getInstance() : StorageAbstract
-    {
-        if(!isset(static::$instance)) {
-            static::$instance = new static();
-        }
-
-        return static::$instance;
-    }
-
+    abstract public static function getInstance() : StorageAbstract;
     /**
      * Get storage type.
      *