diff --git a/src/ScaledUploads.php b/src/ScaledUploads.php
index 6ac5e48..918751d 100644
--- a/src/ScaledUploads.php
+++ b/src/ScaledUploads.php
@@ -68,6 +68,34 @@ class ScaledUploads extends Extension
      */
     private static $custom_folders = [];
 
+    /**
+     * Internal dynamic property generated from config vars
+     *
+     * @var int
+     */
+    private $config_max_width;
+
+    /**
+     * Internal dynamic property generated from config vars
+     *
+     * @var int
+     */
+    private $config_max_height;
+
+    /**
+     * Internal dynamic property generated from config vars
+     *
+     * @var bool
+     */
+    private $config_auto_rotate;
+
+    /**
+     * Internal dynamic property generated from config vars
+     *
+     * @var bool
+     */
+    private $config_force_resampling;
+
     /**
      * Post data manipulation
      *