diff -u b/core/modules/aggregator/aggregator.module b/core/modules/aggregator/aggregator.module
--- b/core/modules/aggregator/aggregator.module
+++ b/core/modules/aggregator/aggregator.module
@@ -25,7 +25,7 @@
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Viewing feeds') . '</dt>';
-      $output .= '<dd>' . t('Feeds contain published content, and may be grouped in categories, generally by topic. Users view feed content in the <a href="!aggregator">main aggregator display</a>, or by <a href="!aggregator-sources">their source</a> (usually via an RSS feed reader). The most recent content in a feed or category can be displayed as a block through the <a href="!admin-block">Blocks administration page</a>.', array('!aggregator' => \Drupal::url('aggregator.page_last'), '!aggregator-sources' => \Drupal::url('aggregator.sources'), '!admin-block' => \Drupal::url('block.admin_display'))) . '</a></dd>';
+      $output .= '<dd>' . t('Users view feed content in the <a href="!aggregator">main aggregator display</a>, or by <a href="!aggregator-sources">their source</a> (usually via an RSS feed reader). The most recent content in a feed can be displayed as a block through the <a href="!admin-block">Blocks administration page</a>.', array('!aggregator' => \Drupal::url('aggregator.page_last'), '!aggregator-sources' => \Drupal::url('aggregator.sources'), '!admin-block' => \Drupal::url('block.admin_display'))) . '</a></dd>';
       $output .= '<dt>' . t('Adding, editing, and deleting feeds') . '</dt>';
       $output .= '<dd>' . t('Administrators can add, edit, and delete feeds, and choose how often to check each feed for newly updated items on the <a href="!feededit">Feed aggregator administration page</a>.', array('!feededit' => \Drupal::url('aggregator.admin_overview'))) . '</dd>';
       $output .= '<dt>' . t('OPML integration') . '</dt>';