diff -u b/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php b/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php
--- b/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php
+++ b/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php
@@ -80,7 +80,7 @@
     $query->condition($nids);
     $query->range(0, 1);
 
-    $grants = static::addGrantsToQuery(node_access_grants($operation, $account));
+    $grants = static::buildGrantsQueryCondition(node_access_grants($operation, $account));
 
     if (count($grants) > 0) {
       $query->condition($grants);
@@ -99,7 +99,7 @@
       ->condition('nid', 0)
       ->condition('grant_view', 1, '>=');
 
-    $grants = static::addGrantsToQuery(node_access_grants('view', $account));
+    $grants = static::buildGrantsQueryCondition(node_access_grants('view', $account));
 
     if (count($grants) > 0 ) {
       $query->condition($grants);
@@ -128,7 +128,7 @@
 
         // If any grant exists for the specified user, then user has access to the
         // node for the specified operation.
-        $grant_conditions = static::addGrantsToQuery($grants);
+        $grant_conditions = static::buildGrantsQueryCondition($grants);
 
         // Attach conditions to the subquery for nodes.
         if (count($grant_conditions->conditions())) {
@@ -244,14 +244,16 @@
   }
 
   /**
-   * Helper function to add node access grants to a query.
+   * Creates a query condition from an array of node access grants.
    *
-   * @param $node_access_grants
-   *   An array of grants, matching the return value of node_access_grants.
+   * @param array $node_access_grants
+   *   An array of grants, as returned by node_access_grants().
    * @return \Drupal\Core\Database\Query\Condition
-   *   A condition object to be passed to $query->condition.
+   *   A condition object to be passed to $query->condition().
+   *
+   * @see node_access_grants()
    */
-  static function addGrantsToQuery(array $node_access_grants) {
+  static function buildGrantsQueryCondition(array $node_access_grants) {
     $grants = new Condition("OR");
     foreach ($node_access_grants as $realm => $gids) {
       if (!empty($gids)) {