diff --git a/core/modules/block/src/Tests/BlockViewBuilderTest.php b/core/modules/block/src/Tests/BlockViewBuilderTest.php
index f338938..b7ec21a 100644
--- a/core/modules/block/src/Tests/BlockViewBuilderTest.php
+++ b/core/modules/block/src/Tests/BlockViewBuilderTest.php
@@ -219,7 +219,7 @@ public function testBlockViewBuilderAlter() {
     $request->setMethod('GET');
 
     $default_keys = array('entity_view', 'block', 'test_block', 'en', 'cache_context.theme');
-    $default_tags = array('block_view' => TRUE, 'block' => array('test_block'), 'theme' => 'stark', 'block_plugin' => array('test_cache'));
+    $default_tags = array('block_view' => TRUE, 'block' => array('test_block'), 'theme' => 'stark', 'block_plugin' => array('test_cache'), 'langcode' => 'en');
 
     // Advanced: cached block, but an alter hook adds an additional cache key.
     $this->setBlockCacheConfig(array(
@@ -248,7 +248,7 @@ public function testBlockViewBuilderAlter() {
     $this->assertIdentical(drupal_render($build), '');
     $cache_entry = $this->container->get('cache.render')->get($cid);
     $this->assertTrue($cache_entry, 'The block render element has been cached with the expected cache ID.');
-    $expected_flattened_tags = array('block_view:1', 'block:test_block', 'theme:stark', 'block_plugin:test_cache', $alter_add_tag . ':1', 'langcode:en', 'rendered:1');
+    $expected_flattened_tags = array('block_view:1', 'block:test_block', 'theme:stark', 'block_plugin:test_cache', 'langcode:en', $alter_add_tag . ':1', 'rendered:1');
     $this->assertIdentical($cache_entry->tags, $expected_flattened_tags, 'The block render element has been cached with the expected cache tags.');
     $this->container->get('cache.render')->delete($cid);