diff --git a/core/lib/Drupal/Core/Lock/LockBackendInterface.php b/core/lib/Drupal/Core/Lock/LockBackendInterface.php
index 97e255d..778e616 100644
--- a/core/lib/Drupal/Core/Lock/LockBackendInterface.php
+++ b/core/lib/Drupal/Core/Lock/LockBackendInterface.php
@@ -63,8 +63,6 @@
 
 /**
  * Lock backend interface.
- *
- * @ingroup lock
  */
 interface LockBackendInterface {
 
@@ -133,3 +131,7 @@ public function releaseAll($lockId = NULL);
    */
   public function getLockId();
 }
+
+/**
+ * @} End of "defgroup lock".
+ */