diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/StringLongItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/StringLongItem.php
index 06cd370..63964de 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/StringLongItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/StringLongItem.php
@@ -16,7 +16,7 @@
  *   id = "string_long",
  *   label = @Translation("Long string"),
  *   description = @Translation("An entity field containing a long string value."),
- *   no_ui = FALSE
+ *   no_ui = TRUE
  * )
  */
 class StringLongItem extends StringItem {