diff --git a/core/modules/entity/lib/Drupal/entity/EntityFieldQuery.php b/core/modules/entity/lib/Drupal/entity/EntityFieldQuery.php
index 05f338b..345b074 100644
--- a/core/modules/entity/lib/Drupal/entity/EntityFieldQuery.php
+++ b/core/modules/entity/lib/Drupal/entity/EntityFieldQuery.php
@@ -462,7 +462,9 @@ class EntityFieldQuery {
    * Orders the result set by a given field column.
    *
    * If called multiple times, the query will order by each specified column in
-   * the order this method is called.
+   * the order this method is called. Also exclude any Entities where the field
+   * value is empty. The exclusion of entities with empty fields was by design
+   * for performance reasons.
    *
    * @param $field
    *   Either a field name or a field array.