diff -u b/core/modules/views/src/Plugin/views/PluginBase.php b/core/modules/views/src/Plugin/views/PluginBase.php
--- b/core/modules/views/src/Plugin/views/PluginBase.php
+++ b/core/modules/views/src/Plugin/views/PluginBase.php
@@ -517,7 +517,7 @@
 
     // Handle default language.
     $default = $manager->getDefaultLanguage()->id;
-    $changes['***LANGUAGE_' . LanguageInterface::LANGCODE_SITE_DEFAULT . ' ***'] = $default;
+    $changes['***LANGUAGE_' . LanguageInterface::LANGCODE_SITE_DEFAULT . '***'] = $default;
 
     // Handle negotiated languages.
     $types = $manager->getDefinedLanguageTypesInfo();
only in patch2:
unchanged:
--- a/core/modules/node/src/Tests/Views/NodeLanguageTest.php
+++ b/core/modules/node/src/Tests/Views/NodeLanguageTest.php
@@ -8,6 +8,7 @@
 namespace Drupal\node\Tests\Views;
 
 use Drupal\Core\Language\Language;
+use Drupal\Core\Language\LanguageInterface;
 use Drupal\field\Entity\FieldStorageConfig;
 
 /**
@@ -189,7 +190,7 @@ public function testLanguages() {
     // filter is set to the site default language instead. This should just
     // show the English nodes, no matter what the content language is.
     $config = \Drupal::config('views.view.frontpage');
-    $config->set('display.default.display_options.filters.langcode.value', array('***LANGUAGE_site_default***' => '***LANGUAGE_site_default***'));
+    $config->set('display.default.display_options.filters.langcode.value', array('***LANGUAGE_' . LanguageInterface::LANGCODE_SITE_DEFAULT . '***' => '***LANGUAGE_' . LanguageInterface::LANGCODE_SITE_DEFAULT . '***'));
     $config->save();
     foreach ($this->node_titles as $langcode => $titles) {
       $this->drupalGet(($langcode == 'en' ? '' : "$langcode/") . 'node');