diff --git a/core/modules/forum/forum.admin.inc b/core/modules/forum/forum.admin.inc
deleted file mode 100644
index 332f11c..0000000
--- a/core/modules/forum/forum.admin.inc
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-/**
- * @file
- * Administrative page callbacks for the Forum module.
- */
-
-use Drupal\taxonomy\Form\OverviewTerms;
-use Drupal\taxonomy\Entity\Term;
-
-/**
- * Form constructor for the forum overview form.
- *
- * Returns a form for controlling the hierarchy of existing forums and
- * containers.
- *
- * @see forum_menu()
- * @ingroup forms
- */
-function forum_overview($form, &$form_state) {
-  module_load_include('inc', 'taxonomy', 'taxonomy.admin');
-  $config = Drupal::config('forum.settings');
-
-  $vid = $config->get('vocabulary');
-  $vocabulary = entity_load('taxonomy_vocabulary', $vid);
-  // @todo temporary, will be fixed in http://drupal.org/node/1974210.
-  $overview = OverviewTerms::create(Drupal::getContainer());
-  $form = $overview->buildForm($form, $form_state, $vocabulary);
-
-  foreach (element_children($form['terms']) as $key) {
-    if (isset($form['terms'][$key]['#term'])) {
-      $term = $form['terms'][$key]['#term'];
-      $form['terms'][$key]['term']['#href'] = 'forum/' . $term->id();
-      unset($form['terms'][$key]['operations']['#links']['delete']);
-      if (in_array($form['terms'][$key]['#term']->id(), $config->get('containers'))) {
-        $form['terms'][$key]['operations']['#links']['edit']['title'] = t('edit container');
-        $form['terms'][$key]['operations']['#links']['edit']['href'] = 'admin/structure/forum/edit/container/' . $term->id();
-        // We don't want the redirect from the link so we can redirect the
-        // delete action.
-        unset($form['terms'][$key]['operations']['#links']['edit']['query']['destination']);
-      }
-      else {
-        $form['terms'][$key]['operations']['#links']['edit']['title'] = t('edit forum');
-        $form['terms'][$key]['operations']['#links']['edit']['href'] = 'admin/structure/forum/edit/forum/' . $term->id();
-        // We don't want the redirect from the link so we can redirect the
-        // delete action.
-        unset($form['terms'][$key]['operations']['#links']['edit']['query']['destination']);
-      }
-    }
-  }
-
-  // Remove the alphabetical reset.
-  unset($form['actions']['reset_alphabetical']);
-
-  // The form needs to have submit and validate handlers set explicitly.
-  // Use the existing taxonomy overview submit handler.
-  $form['#submit'] = array(array($overview, 'submitForm'));
-  $form['terms']['#empty'] = t('No containers or forums available. <a href="@container">Add container</a> or <a href="@forum">Add forum</a>.', array('@container' => url('admin/structure/forum/add/container'), '@forum' => url('admin/structure/forum/add/forum')));
-  return $form;
-}
diff --git a/core/modules/forum/forum.module b/core/modules/forum/forum.module
index 1ed6ac3..c2879a5 100644
--- a/core/modules/forum/forum.module
+++ b/core/modules/forum/forum.module
@@ -94,7 +94,6 @@ function forum_theme() {
     ),
     'forum_form' => array(
       'render element' => 'form',
-      'file' => 'forum.admin.inc',
     ),
   );
 }
@@ -121,10 +120,7 @@ function forum_menu() {
   $items['admin/structure/forum'] = array(
     'title' => 'Forums',
     'description' => 'Control forum hierarchy settings.',
-    'page callback' => 'drupal_get_form',
-    'page arguments' => array('forum_overview'),
-    'access arguments' => array('administer forums'),
-    'file' => 'forum.admin.inc',
+    'route_name' => 'forum_overview',
   );
   $items['admin/structure/forum/list'] = array(
     'title' => 'List',
diff --git a/core/modules/forum/forum.routing.yml b/core/modules/forum/forum.routing.yml
index fe816f0..4d046bf 100644
--- a/core/modules/forum/forum.routing.yml
+++ b/core/modules/forum/forum.routing.yml
@@ -1,36 +1,48 @@
 forum_delete:
-  pattern: 'admin/structure/forum/delete/forum/{taxonomy_term}'
+  pattern: '/admin/structure/forum/delete/forum/{taxonomy_term}'
   defaults:
-    _form: 'Drupal\forum\Form\DeleteForm'
+    _form: '\Drupal\forum\Form\DeleteForm'
   requirements:
     _permission: 'administer forums'
+
 forum_settings:
   pattern: '/admin/structure/forum/settings'
   defaults:
     _form: '\Drupal\forum\ForumSettingsForm'
   requirements:
     _permission: 'administer forums'
+
 forum_add_container:
-  pattern: 'admin/structure/forum/add/container'
+  pattern: '/admin/structure/forum/add/container'
   defaults:
-    _content: 'Drupal\forum\Controller\ForumController::addContainer'
+    _content: '\Drupal\forum\Controller\ForumController::addContainer'
   requirements:
     _permission: 'administer forums'
+
 forum_add_forum:
-  pattern: 'admin/structure/forum/add/forum'
+  pattern: '/admin/structure/forum/add/forum'
   defaults:
-    _content: 'Drupal\forum\Controller\ForumController::addForum'
+    _content: '\Drupal\forum\Controller\ForumController::addForum'
   requirements:
     _permission: 'administer forums'
+
 forum_edit_container:
-  pattern: 'admin/structure/forum/edit/container/{taxonomy_term}'
+  pattern: '/admin/structure/forum/edit/container/{taxonomy_term}'
   defaults:
     _entity_form: 'taxonomy_term.container'
   requirements:
     _permission: 'administer forums'
+
 forum_edit_forum:
-  pattern: 'admin/structure/forum/edit/forum/{taxonomy_term}'
+  pattern: '/admin/structure/forum/edit/forum/{taxonomy_term}'
   defaults:
     _entity_form: 'taxonomy_term.forum'
   requirements:
     _permission: 'administer forums'
+
+forum_overview:
+  pattern: '/admin/structure/forum'
+  defaults:
+    _form: '\Drupal\forum\Form\Overview'
+  requirements:
+    _permission: 'administer forums'
diff --git a/core/modules/forum/lib/Drupal/forum/Form/Overview.php b/core/modules/forum/lib/Drupal/forum/Form/Overview.php
new file mode 100644
index 0000000..b9a2c59
--- /dev/null
+++ b/core/modules/forum/lib/Drupal/forum/Form/Overview.php
@@ -0,0 +1,114 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\forum\Form\OverviewForm.
+ */
+
+namespace Drupal\forum\Form;
+
+use Drupal\taxonomy\Form\OverviewTerms;
+use Drupal\Core\Config\ConfigFactory;
+use Drupal\Core\Entity\EntityManager;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Routing\UrlGeneratorInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+class Overview extends OverviewTerms {
+
+  /**
+   * Entity manager Service Object.
+   *
+   * @var \Drupal\Core\Entity\EntityManager
+   */
+  protected $entityManager;
+
+  /**
+   * The url generator.
+   *
+   * @var \Drupal\Core\Routing\UrlGeneratorInterface
+   */
+  protected $urlGenerator;
+
+  /**
+   * Constructs a \Drupal\forum\Form\OverviewForm object.
+   *
+   * @param \Drupal\Core\Config\ConfigFactory $config_factory
+   *   The factory for configuration objects.
+   * @param \Drupal\Core\Entity\EntityManager $entity_manager
+   *   The entity manager service.
+   */
+  public function __construct(ConfigFactory $config_factory, EntityManager $entity_manager, ModuleHandlerInterface $module_handler, UrlGeneratorInterface $url_generator) {
+    parent::__construct($config_factory, $module_handler);
+    $this->entityManager = $entity_manager;
+    $this->urlGenerator = $url_generator;
+  }
+
+  /**
+   * {@inheritdoc}.
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('config.factory'),
+      $container->get('entity.manager'),
+      $container->get('module_handler'),
+      $container->get('url_generator')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormID() {
+    return 'forum_overview';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, array &$form_state) {
+    $forum_config = $this->configFactory->get('forum.settings');
+    $vid = $forum_config->get('vocabulary');
+    $vocabulary = $this->entityManager->getStorageController('taxonomy_vocabulary')->load($vid);
+    if (!$vocabulary) {
+      throw new NotFoundHttpException();
+    }
+
+    // Build base taxonomy term overview.
+    $form = parent::buildForm($form, $form_state, $vocabulary);
+
+    $containers = $forum_config->get('containers');
+    foreach (element_children($form['terms']) as $key) {
+      if (isset($form['terms'][$key]['#term'])) {
+        $term = $form['terms'][$key]['#term'];
+        $form['terms'][$key]['term']['#href'] = 'forum/' . $term->id();
+        unset($form['terms'][$key]['operations']['#links']['delete']);
+        if (in_array($form['terms'][$key]['#term']->id(), $forum_config->get('containers'))) {
+          $form['terms'][$key]['operations']['#links']['edit']['title'] = $this->t('edit container');
+          $form['terms'][$key]['operations']['#links']['edit']['href'] = 'admin/structure/forum/edit/container/' . $term->id();
+          // We don't want the redirect from the link so we can redirect the
+          // delete action.
+          unset($form['terms'][$key]['operations']['#links']['edit']['query']['destination']);
+        }
+        else {
+          $form['terms'][$key]['operations']['#links']['edit']['title'] = $this->t('edit forum');
+          $form['terms'][$key]['operations']['#links']['edit']['href'] = 'admin/structure/forum/edit/forum/' . $term->id();
+          // We don't want the redirect from the link so we can redirect the
+          // delete action.
+          unset($form['terms'][$key]['operations']['#links']['edit']['query']['destination']);
+        }
+      }
+    }
+
+    // Remove the alphabetical reset.
+    unset($form['actions']['reset_alphabetical']);
+
+    // The form needs to have submit and validate handlers set explicitly.
+    // Use the existing taxonomy overview submit handler.
+    $form['#submit'] = array(array($this, 'submitForm'));
+    $form['terms']['#empty'] = $this->t('No containers or forums available. <a href="@container">Add container</a> or <a href="@forum">Add forum</a>.', array('@container' => $this->urlGenerator->generateFromPath('admin/structure/forum/add/container'), '@forum' => $this->urlGenerator->generateFromPath('admin/structure/forum/add/forum')));
+    return $form;
+  }
+
+}
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Form/OverviewTerms.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Form/OverviewTerms.php
index d79af40..0b1b519 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Form/OverviewTerms.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Form/OverviewTerms.php
@@ -23,7 +23,7 @@ class OverviewTerms extends FormBase {
    *
    * @var \Drupal\Core\Config\Config
    */
-  protected $config;
+  protected $configFactory;
 
   /**
    * The module handler service.
@@ -41,7 +41,7 @@ class OverviewTerms extends FormBase {
    *   The module handler service.
    */
   public function __construct(ConfigFactory $config_factory, ModuleHandlerInterface $module_handler) {
-    $this->config = $config_factory->get('taxonomy.settings');
+    $this->configFactory = $config_factory;
     $this->moduleHandler = $module_handler;
   }
 
@@ -87,7 +87,7 @@ public function buildForm(array $form, array &$form_state, VocabularyInterface $
 
     $page = $this->getRequest()->query->get('page') ?: 0;
     // Number of terms per page.
-    $page_increment = $this->config->get('terms_per_page_admin');
+    $page_increment = $this->configFactory->get('taxonomy.settings')->get('terms_per_page_admin');
     // Elements shown on this page.
     $page_entries = 0;
     // Elements at the root level before this page.