diff --git a/core/modules/system/src/Tests/Form/FormTest.php b/core/modules/system/src/Tests/Form/FormTest.php
index 26ddaee..fbeebfd 100644
--- a/core/modules/system/src/Tests/Form/FormTest.php
+++ b/core/modules/system/src/Tests/Form/FormTest.php
@@ -751,7 +751,7 @@ function testRequiredAttribute() {
   }
 
   /**
-   * Test machine name still required after an ajax submit.
+   * Test machine name is still required after an ajax submit.
    *
    * This protects against regression for https://www.drupal.org/node/2557299.
    */
diff --git a/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php b/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php
index 38aafdd..bd7434a 100644
--- a/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php
+++ b/core/modules/system/tests/modules/form_test/src/Form/FormTestMachineNameValidationForm.php
@@ -100,7 +100,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
   }
 
   /**
-   * Handles changes to the selected facet sources.
+   * Handles changes to the selected snack configuration.
    */
   public function buildAjaxSnackConfigureForm(array $form, FormStateInterface $form_state) {
     return $form['snack_configs'];