diff --git a/core/includes/form.inc b/core/includes/form.inc
index 5ebc3f0339..cc38dc8cdf 100644
--- a/core/includes/form.inc
+++ b/core/includes/form.inc
@@ -40,7 +40,7 @@ function template_preprocess_select(&$variables) {
 /**
  * Converts an options form element into a structured array for output.
  *
- * @deprecated in Drupal 8.3.x, will be removed before Drupal 9.0.0.
+ * @deprecated in Drupal 8.5.x, will be removed before Drupal 9.0.0.
  *   Use \Drupal\Core\Form\FormOptionsHelper::formSelectOptions().
  */
 function form_select_options($element, $choices = NULL) {
@@ -50,7 +50,7 @@ function form_select_options($element, $choices = NULL) {
 /**
  * Returns the indexes of a select element's options matching a given key.
  *
- * @deprecated in Drupal 8.3.x, will be removed before Drupal 9.0.0.
+ * @deprecated in Drupal 8.5.x, will be removed before Drupal 9.0.0.
  *   Use \Drupal\Core\Form\FormOptionsHelper::formGetOptions().
  */
 function form_get_options($element, $key) {