diff --git a/src/Plugin/views/relationship/EntityReferenceRevisions.php b/src/Plugin/views/relationship/EntityReferenceRevisions.php
index 90560f4..348a42b 100644
--- a/src/Plugin/views/relationship/EntityReferenceRevisions.php
+++ b/src/Plugin/views/relationship/EntityReferenceRevisions.php
@@ -22,6 +22,11 @@ class EntityReferenceRevisions extends RelationshipPluginBase {
    */
   protected $joinManager;
 
+  /**
+   * The first alias.
+   */
+  protected $first_alias;
+
   /**
    * Constructs an EntityReferenceRevisions object.
    *