diff --git a/core/modules/simpletest/src/RouteProvider.php b/core/modules/simpletest/src/RouteProvider.php
index 244b98b..0784d72 100644
--- a/core/modules/simpletest/src/RouteProvider.php
+++ b/core/modules/simpletest/src/RouteProvider.php
@@ -14,7 +14,8 @@
 /**
  * Rebuilds the router when the provider is instantiated.
  *
- * @todo Move this outside of simpletest namespace to the Drupal\Tests.
+ * @todo Move this outside of simpletest namespace to the Drupal\Tests, see
+ *   https://www.drupal.org/node/2672762
  */
 class RouteProvider implements PreloadableRouteProviderInterface, PagedRouteProviderInterface {