diff --git a/core/lib/Drupal/Core/Routing/FinalMatcherInterface.php b/core/lib/Drupal/Core/Routing/FinalMatcherInterface.php
index 6d43b19831d..56804465eb3 100644
--- a/core/lib/Drupal/Core/Routing/FinalMatcherInterface.php
+++ b/core/lib/Drupal/Core/Routing/FinalMatcherInterface.php
@@ -18,8 +18,8 @@ interface FinalMatcherInterface {
    * @param Request $request
    *   A Request object against which to match.
    *
-   * @return RouteCollection
-   *   A RouteCollection of matched routes.
+   * @return array
+   *   An array of parameters
    */
   public function matchRequest(Request $request);
 }
diff --git a/core/lib/Drupal/Core/Routing/NestedMatcher.php b/core/lib/Drupal/Core/Routing/NestedMatcher.php
index ccfc5ecfee0..db8a429af4f 100644
--- a/core/lib/Drupal/Core/Routing/NestedMatcher.php
+++ b/core/lib/Drupal/Core/Routing/NestedMatcher.php
@@ -118,9 +118,9 @@ class NestedMatcher implements NestedMatcherInterface {
       $collection = $matcher->matchRequestPartial($request);
     }
 
-    $route = $this->finalMatcher->setCollection($collection)->matchRequest($request);
+    $attributes = $this->finalMatcher->setCollection($collection)->matchRequest($request);
 
-    return $route;
+    return $attributes;
   }
 
   /**