diff -u b/src/Routing/RouteSubscriber.php b/src/Routing/RouteSubscriber.php
--- b/src/Routing/RouteSubscriber.php
+++ b/src/Routing/RouteSubscriber.php
@@ -129,7 +129,7 @@
       $route
         ->addDefaults([
           '_controller' => '\Drupal\devel\Controller\EntityDebugController::entityTypeDefinition',
-          '_title' => 'Devel Definition',
+          '_title' => 'Entity type definition',
         ])
         ->addRequirements([
           '_permission' => 'access devel information'