diff --git a/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php
index c9f3e7d..da42832 100644
--- a/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php
@@ -41,6 +41,12 @@ protected function alterRoutes(RouteCollection $collection, $module) {
         watchdog('error', 'The following variables are reserved names by drupal: @variables', $placeholders);
         return FALSE;
       }
+
+      $defaults = $route->getDefaults();
+      if (!isset($defaults['_controller']) && !isset($defaults['_title']) && !isset($defaults['_title_callback'])) {
+        drupal_set_message(String::format('The path for @path has no title specified.', $route->getPath()));
+        watchdog('error', 'The path for @path has no title specified.', $route->getPath());
+      }
     }
     return TRUE;
   }