diff --git a/core/lib/Drupal/Core/Language/LanguageManager.php b/core/lib/Drupal/Core/Language/LanguageManager.php
index eda43525fb3311070ef26f0870623b339cbb9197..cd27c747b824f2e95edfb760bfb2203a875d13bc 100644
--- a/core/lib/Drupal/Core/Language/LanguageManager.php
+++ b/core/lib/Drupal/Core/Language/LanguageManager.php
@@ -87,28 +87,43 @@ public function getLanguageTypes() {
   }
 
   /**
-   * {@inheritdoc}
+   * Returns information about all defined language types.
+   *
+   * Defines the three core language types:
+   * - Interface language is the only configurable language type in core. It is
+   *   used by t() as the default language if none is specified.
+   * - Content language is by default non-configurable and inherits the
+   *   interface language negotiated value. It is used by the Field API to
+   *   determine the display language for fields if no explicit value is
+   *   specified.
+   * - URL language is by default non-configurable and is determined through the
+   *   URL language negotiation method or the URL fallback language negotiation
+   *   method if no language can be detected. It is used by l() as the default
+   *   language if none is specified.
+   *
+   * @return array
+   *   An associative array of language type information arrays keyed by
+   *   language type machine name, in the format of
+   *   hook_language_types_info().
    */
   public function getDefinedLanguageTypesInfo() {
-    // This needs to have the same return value as
-    // language_language_type_info(), so that even if the Language module is
-    // not defined, users of this information, such as the Views module, can
-    // access names and descriptions of the default language types.
-    return array(
+    $this->definedLanguageTypesInfo = array(
       LanguageInterface::TYPE_INTERFACE => array(
-        'name' => $this->t('Interface text'),
-        'description' => $this->t('Order of language detection methods for interface text. If a translation of interface text is available in the detected language, it will be displayed.'),
+        'name' => new TranslationWrapper('Interface text'),
+        'description' => new TranslationWrapper('Order of language detection methods for interface text. If a translation of interface text is available in the detected language, it will be displayed.'),
         'locked' => TRUE,
       ),
       LanguageInterface::TYPE_CONTENT => array(
-        'name' => $this->t('Content'),
-        'description' => $this->t('Order of language detection methods for content. If a version of content is available in the detected language, it will be displayed.'),
+        'name' => new TranslationWrapper('Content'),
+        'description' => new TranslationWrapper('Order of language detection methods for content. If a version of content is available in the detected language, it will be displayed.'),
         'locked' => TRUE,
       ),
       LanguageInterface::TYPE_URL => array(
         'locked' => TRUE,
       ),
     );
+
+    return $this->definedLanguageTypesInfo;
   }
 
   /**
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 342e7302d8a8d6567ba1574dc0ca2eec2a99584b..29c93d2cf9e383c9c9e863d82d50f3e27c3901f0 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -282,42 +282,6 @@ function language_get_default_langcode($entity_type, $bundle) {
   return $configuration->getDefaultLangcode();
 }
 
-/**
- * Implements hook_language_types_info().
- *
- * Defines the three core language types:
- * - Interface language is the only configurable language type in core. It is
- *   used by t() as the default language if none is specified.
- * - Content language is by default non-configurable and inherits the interface
- *   language negotiated value. It is used by the Field API to determine the
- *   display language for fields if no explicit value is specified.
- * - URL language is by default non-configurable and is determined through the
- *   URL language negotiation method or the URL fallback language negotiation
- *   method if no language can be detected. It is used by l() as the default
- *   language if none is specified.
- */
-function language_language_types_info() {
-  return array(
-    LanguageInterface::TYPE_INTERFACE => array(
-      'name' => t('Interface text'),
-      'description' => t('Order of language detection methods for interface text. If a translation of interface text is available in the detected language, it will be displayed.'),
-      'locked' => TRUE,
-    ),
-    LanguageInterface::TYPE_CONTENT => array(
-      'name' => t('Content'),
-      'description' => t('Order of language detection methods for content. If a version of content is available in the detected language, it will be displayed.'),
-      'fixed' => array(LanguageNegotiationUI::METHOD_ID),
-      'locked' => TRUE,
-    ),
-    LanguageInterface::TYPE_URL => array(
-      'name' => t('URL'),
-      'description' => t('Order of language detection methods for URLs. The detected language will be used as the default when generating URLs for internal links on the site.'),
-      'fixed' => array(LanguageNegotiationUrl::METHOD_ID, LanguageNegotiationUrlFallback::METHOD_ID),
-      'locked' => TRUE,
-    ),
-  );
-}
-
 /**
  * Reads language prefixes and uses the langcode if no prefix is set.
  */
@@ -540,3 +504,16 @@ function language_tour_tips_alter(array &$tour_tips, EntityInterface $entity) {
     }
   }
 }
+
+/**
+ * Implements hook_language_types_info_alter().
+ *
+ * We can't set the fixed properties in \Drupal\Core\Language\LanguageManager,
+ * where the rest of the properties for the default language types are defined.
+ * The LanguageNegation classes are only loaded when the language module is
+ * enabled and we can't be sure of that in the LanguageManager.
+ */
+function language_language_types_info_alter(array &$language_types) {
+  $language_types[LanguageInterface::TYPE_CONTENT]['fixed'] = [LanguageNegotiationUI::METHOD_ID];
+  $language_types[LanguageInterface::TYPE_URL]['fixed'] = [LanguageNegotiationUrl::METHOD_ID, LanguageNegotiationUrlFallback::METHOD_ID];
+}
diff --git a/core/modules/language/src/ConfigurableLanguageManager.php b/core/modules/language/src/ConfigurableLanguageManager.php
index d4dad5c04932f042d6e377aa1631b97a3b4d0823..d51692f1a43c079b5d2ab7f24d714138edf5472b 100644
--- a/core/modules/language/src/ConfigurableLanguageManager.php
+++ b/core/modules/language/src/ConfigurableLanguageManager.php
@@ -182,10 +182,14 @@ protected function loadLanguageTypesConfiguration() {
    */
   public function getDefinedLanguageTypesInfo() {
     if (!isset($this->languageTypesInfo)) {
+      $defaults = parent::getDefinedLanguageTypesInfo();
+
       $info = $this->moduleHandler->invokeAll('language_types_info');
+      $language_info = $info + $defaults;
+
       // Let other modules alter the list of language types.
-      $this->moduleHandler->alter('language_types_info', $info);
-      $this->languageTypesInfo = $info;
+      $this->moduleHandler->alter('language_types_info', $language_info);
+      $this->languageTypesInfo = $language_info;
     }
     return $this->languageTypesInfo;
   }