diff -u b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldType/TestItem.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldType/TestItem.php
--- b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldType/TestItem.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldType/TestItem.php
@@ -115,7 +115,7 @@
    * {@inheritdoc}
    */
   public function delete() {
-    // Reports that preDelete() method is executed for testing purposes.
+    // Reports that delete() method is executed for testing purposes.
     field_test_memorize('field_test_field_delete', array($this->getEntity()));
   }