diff --git a/core/modules/block/custom_block/custom_block.module b/core/modules/block/custom_block/custom_block.module
index 1503742..29710ae 100644
--- a/core/modules/block/custom_block/custom_block.module
+++ b/core/modules/block/custom_block/custom_block.module
@@ -50,10 +50,10 @@ function custom_block_menu_local_tasks(&$data, $router_item, $root_path) {
  * Implements hook_menu_local_actions_alter().
  */
 function custom_block_menu_local_actions_alter(&$actions) {
-  if (isset($actions['custom_block_add_action'])) {
+  if (isset($actions['local_action_static:custom_block_add_action'])) {
     foreach (list_themes() as $theme => $theme_info) {
       if ($theme_info->status) {
-        $actions['custom_block_add_action']['appears_on'][] = "block_admin_display.$theme";
+        $actions['local_action_static:custom_block_add_action']['appears_on'][] = "block_admin_display.$theme";
       }
     }
   }