diff --git a/core/lib/Drupal/Core/Entity/Query/QueryInterface.php b/core/lib/Drupal/Core/Entity/Query/QueryInterface.php
index e673db1..410d692 100644
--- a/core/lib/Drupal/Core/Entity/Query/QueryInterface.php
+++ b/core/lib/Drupal/Core/Entity/Query/QueryInterface.php
@@ -111,8 +111,13 @@ public function notExists($field, $langcode = NULL);
   public function pager($limit = 10, $element = NULL);
 
   /**
-   * @param null $start
-   * @param null $length
+   * Constrains the number of rows returned by the SELECT statement.
+   *
+   * @param $start
+   *   The offset of the first row to return.
+   * @param $length
+   *   The maximum number of rows to return.
+   *
    * @return \Drupal\Core\Entity\Query\QueryInterface
    *   The called object.
    */