diff --git a/core/lib/Drupal/Core/Language/LanguageManager.php b/core/lib/Drupal/Core/Language/LanguageManager.php
index b4acc6a..2b5f466 100644
--- a/core/lib/Drupal/Core/Language/LanguageManager.php
+++ b/core/lib/Drupal/Core/Language/LanguageManager.php
@@ -81,7 +81,7 @@ public function setRequest(Request $request) {
    * @return \Drupal\Core\Language\Language
    *   A language object for the given type.
    */
-  public function getLanguage($type) {
+  public function getLanguage($type = Language::TYPE_INTERFACE) {
     if (isset($this->languages[$type])) {
       return $this->languages[$type];
     }