core/modules/editor/src/Form/EditorImageDialog.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/modules/editor/src/Form/EditorImageDialog.php b/core/modules/editor/src/Form/EditorImageDialog.php
index f410558..4d4d28d 100644
--- a/core/modules/editor/src/Form/EditorImageDialog.php
+++ b/core/modules/editor/src/Form/EditorImageDialog.php
@@ -110,7 +110,7 @@ public function buildForm(array $form, FormStateInterface $form_state, FilterFor
       '#title' => $this->t('Alternative text'),
       '#type' => 'textfield',
       '#required' => TRUE,
-      '#required_error' => $this->t('Alternative text is required.<br><em>(Only in rare cases it may be empty. To create empty alternative text, please enter <tt>""</tt> — two double quotes without any content).'),
+      '#required_error' => $this->t('Alternative text is required.<br><em>(Only in rare cases should this be left empty. To create empty alternative text, please enter <tt>""</tt> — two double quotes without any content).'),
       '#default_value' => $alt,
       '#maxlength' => 2048,
     );