diff --git a/core/includes/common.inc b/core/includes/common.inc
index a4da21b..f5d1ff9 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -3633,7 +3633,7 @@ function drupal_render_cache_get(array $elements) {
  *
  * @see drupal_render_cache_get()
  */
-function drupal_render_cache_set(&$markup, array $elements) {
+function drupal_render_cache_set(&$markup, $elements) {
   // Create the cache ID for the element.
   if (!\Drupal::request()->isMethodSafe() || !$cid = drupal_render_cid_create($elements)) {
     return FALSE;
@@ -3729,7 +3729,7 @@ function drupal_render_cache_generate_placeholder($callback, array &$context) {
  * @see drupal_render()
  * @see drupal_render_collect_post_render_cache
  */
-function _drupal_render_process_post_render_cache(array &$elements) {
+function _drupal_render_process_post_render_cache(&$elements) {
   if (isset($elements['#post_render_cache'])) {
     /** @var \Drupal\Core\Controller\ControllerResolverInterface $controller_resolver */
     $controller_resolver = \Drupal::service('controller_resolver');