diff -u b/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php b/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php
--- b/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php
+++ b/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php
@@ -140,7 +140,7 @@
   }
 
   /**
-   * Test that opting out for inline form errors works.
+   * Test that opting out of inline form errors works.
    *
    * @covers ::handleFormErrors
    * @covers ::displayErrorMessages
diff -u b/core/modules/quickedit/src/Form/QuickEditFieldForm.php b/core/modules/quickedit/src/Form/QuickEditFieldForm.php
--- b/core/modules/quickedit/src/Form/QuickEditFieldForm.php
+++ b/core/modules/quickedit/src/Form/QuickEditFieldForm.php
@@ -114,7 +114,7 @@
       '#attributes' => ['class' => ['quickedit-form-submit']],
     ];
 
-    // Use the non inline form error display for Quick Edit forms, because in
+    // Use the non-inline form error display for Quick Edit forms, because in
     // this case the errors are already near the form element.
     $form['#disable_inline_form_errors'] = TRUE;