diff --git a/core/modules/rest/src/Plugin/views/display/RestExport.php b/core/modules/rest/src/Plugin/views/display/RestExport.php
index 51b070b..43eb4d6 100644
--- a/core/modules/rest/src/Plugin/views/display/RestExport.php
+++ b/core/modules/rest/src/Plugin/views/display/RestExport.php
@@ -246,7 +246,7 @@ public function optionsSummary(&$categories, &$options) {
    * {@inheritdoc}
    */
   public function collectRoutes(RouteCollection $collection) {
-    parent::collectRoutes($collection);
+    $result = parent::collectRoutes($collection);
     $view_id = $this->view->storage->id();
     $display_id = $this->display['id'];
 
@@ -261,6 +261,7 @@ public function collectRoutes(RouteCollection $collection) {
       // Add the new requirements to the route.
       $route->addRequirements($requirements);
     }
+    return $result;
   }
 
   /**