diff --git a/core/modules/aggregator/aggregator.module b/core/modules/aggregator/aggregator.module
index 78cfcb1..0bbbf28 100644
--- a/core/modules/aggregator/aggregator.module
+++ b/core/modules/aggregator/aggregator.module
@@ -131,18 +131,6 @@ function aggregator_permission() {
 }
 
 /**
- * Implements hook_admin_paths().
- */
-function aggregator_admin_paths() {
-  $paths = array(
-    'aggregator/sources/add' => TRUE,
-    'aggregator/sources/*/configure' => TRUE,
-    'aggregator/sources/*/delete' => TRUE,
-  );
-  return $paths;
-}
-
-/**
  * Implements hook_cron().
  *
  * Queues news feeds for updates once their refresh interval has elapsed.
diff --git a/core/modules/aggregator/aggregator.routing.yml b/core/modules/aggregator/aggregator.routing.yml
index dfc172b..4cdd2fe 100644
--- a/core/modules/aggregator/aggregator.routing.yml
+++ b/core/modules/aggregator/aggregator.routing.yml
@@ -46,6 +46,8 @@ aggregator.feed_add:
     _title: 'Add feed'
   requirements:
     _permission: 'administer news feeds'
+  options:
+    _admin_route: TRUE
 
 aggregator.feed_view:
   path: '/aggregator/sources/{aggregator_feed}'
@@ -62,6 +64,8 @@ aggregator.feed_configure:
     _title: 'Configure'
   requirements:
     _permission: 'administer news feeds'
+  options:
+    _admin_route: TRUE
 
 aggregator.feed_delete:
   path: '/aggregator/sources/{aggregator_feed}/delete'
@@ -70,6 +74,8 @@ aggregator.feed_delete:
     _title: 'Delete feed'
   requirements:
     _permission: 'administer news feeds'
+  options:
+    _admin_route: TRUE
 
 aggregator.page_last:
   path: '/aggregator'