diff --git a/core/lib/Drupal/Core/Routing/LazyRouteCollection.php b/core/lib/Drupal/Core/Routing/LazyRouteCollection.php
index 52a716b80a2..02a45d83360 100644
--- a/core/lib/Drupal/Core/Routing/LazyRouteCollection.php
+++ b/core/lib/Drupal/Core/Routing/LazyRouteCollection.php
@@ -23,8 +23,7 @@ class LazyRouteCollection extends RouteCollection {
   /**
    * {@inheritdoc}
    */
-  #[\ReturnTypeWillChange]
-  public function getIterator() {
+  public function getIterator(): \ArrayIterator {
     return new \ArrayIterator($this->all());
   }