diff --git a/core/modules/node/src/NodeGrantDatabaseStorage.php b/core/modules/node/src/NodeGrantDatabaseStorage.php
index 4bfeff0..263bdff 100644
--- a/core/modules/node/src/NodeGrantDatabaseStorage.php
+++ b/core/modules/node/src/NodeGrantDatabaseStorage.php
@@ -275,7 +275,7 @@ public function deleteNodeRecords(array $nids) {
    *
    * @see node_access_grants()
    */
-  static function buildGrantsQueryCondition(array $node_access_grants) {
+  static protected function buildGrantsQueryCondition(array $node_access_grants) {
     $grants = new Condition("OR");
     foreach ($node_access_grants as $realm => $gids) {
       if (!empty($gids)) {