diff --git a/ApplicationAbstract.php b/ApplicationAbstract.php
index a827cf25d..517a95efa 100644
--- a/ApplicationAbstract.php
+++ b/ApplicationAbstract.php
@@ -37,6 +37,14 @@ class ApplicationAbstract
      */
     public $appName = '';
 
+    /**
+     * Config.
+     *
+     * @var array
+     * @since 1.0.0
+     */
+    private $config = [];
+
     /**
      * Database object.
      *