diff --git a/core/modules/language/language.install b/core/modules/language/language.install
index 0ff2912..3738831 100644
--- a/core/modules/language/language.install
+++ b/core/modules/language/language.install
@@ -19,8 +19,10 @@ function language_install() {
   $language_manager = \Drupal::languageManager();
   if ($language_manager instanceof ConfigurableLanguageManagerInterface) {
     $negotiator = \Drupal::service('language_negotiator');
+    $types = $language_manager->getLanguageTypes();
+    $negotiator->updateConfiguration($types);
     // Enable URL language detection for each configurable language type.
-    foreach ($language_manager->getLanguageTypes() as $type) {
+    foreach ($types as $type) {
       $negotiator->saveConfiguration($type, array(LanguageNegotiationUrl::METHOD_ID => 0));
     }
   }
diff --git a/core/modules/language/lib/Drupal/language/ConfigurableLanguageManager.php b/core/modules/language/lib/Drupal/language/ConfigurableLanguageManager.php
index 873bf7a..9dfacdc 100644
--- a/core/modules/language/lib/Drupal/language/ConfigurableLanguageManager.php
+++ b/core/modules/language/lib/Drupal/language/ConfigurableLanguageManager.php
@@ -247,6 +247,7 @@ public function getNegotiator() {
   public function setNegotiator(LanguageNegotiatorInterface $negotiator) {
     $this->negotiator = $negotiator;
     $this->reset();
+    // TODO is this necessary?
     $this->init();
   }
 
diff --git a/core/modules/language/tests/language_elements_test/language_elements_test.info.yml b/core/modules/language/tests/language_elements_test/language_elements_test.info.yml
index 9fc44c1..254c5f6 100644
--- a/core/modules/language/tests/language_elements_test/language_elements_test.info.yml
+++ b/core/modules/language/tests/language_elements_test/language_elements_test.info.yml
@@ -4,4 +4,4 @@ description: 'Support module for the language form elements tests.'
 core: 8.x
 package: Testing
 version: VERSION
-#hidden: true
+hidden: true