diff --git a/core/modules/block/lib/Drupal/block/Entity/Block.php b/core/modules/block/lib/Drupal/block/Entity/Block.php
index 7e5e090..02b1d76 100644
--- a/core/modules/block/lib/Drupal/block/Entity/Block.php
+++ b/core/modules/block/lib/Drupal/block/Entity/Block.php
@@ -125,7 +125,8 @@ public function label($langcode = NULL) {
       return $settings['label'];
     }
     else {
-      return $this->getPlugin()->getPluginDefinition();
+      $definition = $this->getPlugin()->getPluginDefinition();
+      return $definition['admin_label'];
     }
   }