diff --git c/core/modules/search/search.routing.yml w/core/modules/search/search.routing.yml
index c3ae044..39dc96b 100644
--- c/core/modules/search/search.routing.yml
+++ w/core/modules/search/search.routing.yml
@@ -13,7 +13,7 @@ search.reindex_confirm:
     _permission: 'administer search'
 
 search.view:
-  path: '/search/{plugin_id}/{keys}'
+  path: '/search/{keys}'
   defaults:
     _content: '\Drupal\search\Controller\SearchController::searchViewPlugin'
     plugin_id: NULL