diff --git a/core/modules/field_ui/field_ui.api.php b/core/modules/field_ui/field_ui.api.php
index f903e12..6a4f61a 100644
--- a/core/modules/field_ui/field_ui.api.php
+++ b/core/modules/field_ui/field_ui.api.php
@@ -34,6 +34,8 @@
  *
  * @return
  *   The form definition for the field settings.
+ *
+ * @ingroup field_types
  */
 function hook_field_settings_form($field, $instance, $has_data) {
   $settings = $field['settings'];
@@ -61,6 +63,8 @@ function hook_field_settings_form($field, $instance, $has_data) {
  *
  * @return
  *   The form definition for the field instance settings.
+ *
+ * @ingroup field_types
  */
 function hook_field_instance_settings_form($field, $instance) {
   $settings = $instance['settings'];