diff --git a/core/lib/Drupal/Core/Database/Query/Select.php b/core/lib/Drupal/Core/Database/Query/Select.php
index 3332fd4d82..db58e8d67f 100644
--- a/core/lib/Drupal/Core/Database/Query/Select.php
+++ b/core/lib/Drupal/Core/Database/Query/Select.php
@@ -123,14 +123,14 @@ class Select extends Query implements SelectInterface {
    *
    * @var array
    */
-  protected $alterMetaData;
+  public $alterMetaData;
 
   /**
    * The query tags.
    *
    * @var array
    */
-  protected $alterTags;
+  public $alterTags;
 
   /**
    * Constructs a Select object.