diff --git a/core/modules/block/block.install b/core/modules/block/block.install
index b39888b..8627d74 100644
--- a/core/modules/block/block.install
+++ b/core/modules/block/block.install
@@ -67,7 +67,7 @@ function block_update_8001() {
         // We not only store the missing context mappings but also the previous
         // block status, in order to allow contributed and custom modules to do
         // their own updates.
-        $update_backup[$block['id']] = ['missing_context_ids' => $backup_values, 'status' => $block['id']];
+        $update_backup[$block->get('id')] = ['missing_context_ids' => $backup_values, 'status' => $block->get('status')];
       }
     }