diff --git a/core/modules/system/tests/modules/form_test/src/Form/FormTestDisabledElementsForm.php b/core/modules/system/tests/modules/form_test/src/Form/FormTestDisabledElementsForm.php
index d768de689ec..09a2ed9b875 100644
--- a/core/modules/system/tests/modules/form_test/src/Form/FormTestDisabledElementsForm.php
+++ b/core/modules/system/tests/modules/form_test/src/Form/FormTestDisabledElementsForm.php
@@ -129,8 +129,8 @@ class FormTestDisabledElementsForm extends FormBase {
     // Date.
     $date = new DrupalDateTime('1978-11-01 10:30:00', 'Europe/Berlin');
     // Starting with PHP 5.4.30, 5.5.15, JSON encoded DateTime objects include
-    // microsends. Make sure that the expected value is correct for all versions
-    // by encoding and decoding it again instead of hardcoding it.
+    // microseconds. Make sure that the expected value is correct for all
+    // versions by encoding and decoding it again instead of hardcoding it.
     // See https://github.com/php/php-src/commit/fdb2709dd27c5987c2d2c8aaf0cdbebf9f17f643
     $expected = json_decode(json_encode($date), TRUE);
     $form['disabled_container']['disabled_container_datetime'] = array(