diff --git a/src/EventSubscriber/RedirectRequestSubscriber.php b/src/EventSubscriber/RedirectRequestSubscriber.php
index 3ca8b8b..8a49194 100644
--- a/src/EventSubscriber/RedirectRequestSubscriber.php
+++ b/src/EventSubscriber/RedirectRequestSubscriber.php
@@ -73,6 +73,13 @@ class RedirectRequestSubscriber implements EventSubscriberInterface {
   protected $pathProcessor;
 
   /**
+   * Domain redirect configuration.
+   *
+   * @var \Drupal\Core\Config\Config
+   */
+  protected $domainConfig;
+
+  /**
    * Constructs a \Drupal\redirect\EventSubscriber\RedirectRequestSubscriber object.
    *
    * @param \Drupal\redirect\RedirectRepository $redirect_repository
@@ -96,6 +103,7 @@ class RedirectRequestSubscriber implements EventSubscriberInterface {
     $this->redirectRepository = $redirect_repository;
     $this->languageManager = $language_manager;
     $this->config = $config->get('redirect.settings');
+    $this->domainConfig = $config->get('redirect.domain');
     $this->aliasManager = $alias_manager;
     $this->moduleHandler = $module_handler;
     $this->entityManager = $entity_manager;
@@ -123,28 +131,31 @@ class RedirectRequestSubscriber implements EventSubscriberInterface {
       return;
     }
 
-    // Redirect between domains.
-    $from_domain = $request->getUri();
-    $domains = \Drupal::config('redirect.domain')->get('domain_redirects');
-    $to_domain = NULL;
-    // Removes HTTP prefix.
-    if (strpos($from_domain, 'http://') !== FALSE) {
-      $from_domain = substr($from_domain, 7);
-    }
-    if (strpos($from_domain, 'https://') !== FALSE) {
-      $from_domain = substr($from_domain, 8);
-    }
-    // Checks if there is a redirect domain in the configuration.
-    foreach ($domains as $domain) {
-      if ($domain['from'] == $from_domain) {
-        $to_domain = $domain['to'];
-        break;
+    // Redirect between domains configuration.
+    if ($this->domainConfig) {
+      $domains = $this->domainConfig->get('domain.redirects');
+
+      $from_domain = $request->getUri();
+      $to_domain = NULL;
+      // Removes HTTP prefix.
+      if (strpos($from_domain, 'http://') !== FALSE) {
+        $from_domain = substr($from_domain, 7);
+      }
+      if (strpos($from_domain, 'https://') !== FALSE) {
+        $from_domain = substr($from_domain, 8);
+      }
+      // Checks if there is a redirect domain in the configuration.
+      foreach ($domains as $domain) {
+        if ($domain['from'] == $from_domain) {
+          $to_domain = $domain['to'];
+          break;
+        }
+      }
+      if ($to_domain) {
+        $response = new TrustedRedirectResponse($to_domain);
+        $event->setResponse($response);
+        return;
       }
-    }
-    if ($to_domain) {
-      $response = new TrustedRedirectResponse($to_domain);
-      $event->setResponse($response);
-      return;
     }
 
     // Get URL info and process it to be used for hash generation.