diff --git a/src/Pixie/QueryBuilder/QueryBuilderHandler.php b/src/Pixie/QueryBuilder/QueryBuilderHandler.php
index f7fd976..9fad731 100644
--- a/src/Pixie/QueryBuilder/QueryBuilderHandler.php
+++ b/src/Pixie/QueryBuilder/QueryBuilderHandler.php
@@ -37,6 +37,16 @@ class QueryBuilderHandler
      */
     protected $tablePrefix = null;
 
+    /**
+     * @var string
+     */
+    protected $adapter;
+
+    /**
+     * @var array
+     */
+    protected $adapterConfig;
+    
     /**
      * @var \Pixie\QueryBuilder\Adapters\BaseAdapter
      */