diff --git a/core/modules/overlay/overlay.module b/core/modules/overlay/overlay.module
index 53a8776..3f66776 100644
--- a/core/modules/overlay/overlay.module
+++ b/core/modules/overlay/overlay.module
@@ -374,7 +374,7 @@ function overlay_preprocess_maintenance_page(&$variables) {
  *
  * @param array $variables
  *   An associative array containing:
- *   - page: A render element representing the page.
+ *   - elements: An associative array containing the properties of the element.
  */
 function template_preprocess_overlay(&$variables) {
   $variables['tabs'] = menu_primary_local_tasks();