diff --git a/core/includes/file.inc b/core/includes/file.inc
index 65f0197..3cd9439 100644
--- a/core/includes/file.inc
+++ b/core/includes/file.inc
@@ -31,7 +31,6 @@
 
 /**
  * @defgroup file File interface
- * @ingroup file
  * @{
  * Common file handling functions.
  */
diff --git a/core/modules/file/src/Entity/File.php b/core/modules/file/src/Entity/File.php
index da6d7c5..a930b81 100644
--- a/core/modules/file/src/Entity/File.php
+++ b/core/modules/file/src/Entity/File.php
@@ -12,6 +12,7 @@
 
 /**
  * Defines the file entity class.
+ * @ingroup file
  *
  * @ContentEntityType(
  *   id = "file",
diff --git a/core/modules/file/src/FileInterface.php b/core/modules/file/src/FileInterface.php
index 5b5a6bb..b7d1bc1 100644
--- a/core/modules/file/src/FileInterface.php
+++ b/core/modules/file/src/FileInterface.php
@@ -13,6 +13,7 @@
 
   /**
    * Returns the name of the file.
+   * @ingroup file
    *
    * This may differ from the basename of the URI if the file is renamed to
    * avoid overwriting an existing file.