diff --git a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php
index c3d4c36..8dbd415 100644
--- a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php
+++ b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Breadcrumb;
 
-use Symfony\Component\HttpFoundation\ParameterBag;
-
 /**
  * Defines an interface for classes that build breadcrumbs.
  */
diff --git a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php
index 6d015e8..87534b5 100644
--- a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php
+++ b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Breadcrumb;
 
-use Symfony\Component\HttpFoundation\ParameterBag;
-
 /**
  * Breadcrumb manager.
  *
diff --git a/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php b/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
index fedb5f1..ee5267d 100644
--- a/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
+++ b/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\forum;
 
-use Symfony\Component\HttpFoundation\ParameterBag;
-
 use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
 use Drupal\Core\Config\ConfigFactory;
 use Drupal\Core\Entity\EntityManager;
@@ -21,7 +19,7 @@ class ForumBreadcrumbBuilder implements BreadcrumbBuilderInterface {
   /**
    * Configuration object for this builder.
    *
-   * @var ;Drupal\Core\Config\Config
+   * @var \Drupal\Core\Config\Config
    */
   protected $config;
 
@@ -49,7 +47,7 @@ public function __construct(EntityManager $entity_manager, ConfigFactory $config
   public function build(array $attributes) {
 
     // @todo This only works for legacy routes. Once node/% and forum/% are
-    // converted to the new router this code will need to be updated.
+    //   converted to the new router this code will need to be updated.
     if (isset($attributes['drupal_menu_item'])) {
       $item = $attributes['drupal_menu_item'];
       switch ($item['path']) {
diff --git a/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php b/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php
index 5814db5..a56856a 100644
--- a/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php
+++ b/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php
@@ -8,7 +8,6 @@
 namespace Drupal\menu_link;
 
 use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
-use Symfony\Component\HttpFoundation\ParameterBag;
 
 /**
  * Class to define the menu_link breadcrumb builder.
diff --git a/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php b/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php
index 7b6fc7c..3da7e81 100644
--- a/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php
+++ b/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php
@@ -8,7 +8,6 @@
 namespace Drupal\system;
 
 use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
-use Symfony\Component\HttpFoundation\ParameterBag;
 
 /**
  * Class to define the legacy breadcrumb builder.