core/modules/node/src/NodeGrantDatabaseStorage.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/modules/node/src/NodeGrantDatabaseStorage.php b/core/modules/node/src/NodeGrantDatabaseStorage.php
index f33aba6..4bfeff0 100644
--- a/core/modules/node/src/NodeGrantDatabaseStorage.php
+++ b/core/modules/node/src/NodeGrantDatabaseStorage.php
@@ -96,7 +96,7 @@ public function access(NodeInterface $node, $operation, $langcode, AccountInterf
     // know it for a fact.
     $set_cacheability = function (AccessResult $access_result) use ($operation) {
       if ($operation === 'view') {
-        return $access_result->addCacheContexts('cache_context.node_view_grants');
+        return $access_result->addCacheContexts(['cache_context.node_view_grants']);
       }
       else {
         return $access_result->setCacheable(FALSE);