diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php b/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php
index c8695fe..74c03fe 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php
@@ -85,8 +85,8 @@ public function feedAdd() {
   /**
    * Displays all the categories used by the Aggregator module.
    *
-   * @return string
-   *   An HTML formatted string.
+   * @return array
+   *   A render array.
    */
   public function categories() {