diff --git a/modules/helfi_etusivu_entities/README.md b/modules/helfi_etusivu_entities/README.md
index ff0009477..412496245 100644
--- a/modules/helfi_etusivu_entities/README.md
+++ b/modules/helfi_etusivu_entities/README.md
@@ -3,6 +3,10 @@
 Remote entities module allows fetching announcements from `Etusivu`-instance.
 It utilizes `json-api` and `external_entities`-module to transfer the data between instances.
 
+## Language support
+
+If current language is not in [default languages](https://github.com/City-of-Helsinki/drupal-module-helfi-api-base/blob/main/documentation/default-languages.md), remote entities use fallback language. Alt languages show local announcements in current language (if translated) and in English.
+
 ## How to set up locally
 
 Local setup requires Etusivu-instance to be up and running with some relevant data created to it.
diff --git a/modules/helfi_etusivu_entities/tests/src/Functional/LocalEntitiesTest.php b/modules/helfi_etusivu_entities/tests/src/Functional/LocalEntitiesTest.php
index 716ed9777..835b4b9a9 100644
--- a/modules/helfi_etusivu_entities/tests/src/Functional/LocalEntitiesTest.php
+++ b/modules/helfi_etusivu_entities/tests/src/Functional/LocalEntitiesTest.php
@@ -4,6 +4,7 @@
 
 namespace Drupal\Tests\helfi_etusivu_entities\Functional;
 
+use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\node\NodeInterface;
 use Drupal\Tests\block\Traits\BlockCreationTrait;
 use Drupal\Tests\BrowserTestBase;
@@ -45,6 +46,8 @@ final class LocalEntitiesTest extends BrowserTestBase {
   public function setUp(): void {
     parent::setUp();
 
+    ConfigurableLanguage::createFromLangcode('uk')->save();
+
     $this->testNode = $this->createNode([
       'status' => NodeInterface::PUBLISHED,
       'type' => 'page',
@@ -99,17 +102,32 @@ public function testBlocks(): void {
       'type' => 'announcement',
       'title' => 'Test announcement',
       'body' => 'Announcement content',
+      'field_announcement_type' => 'notification',
       'langcode' => 'en',
     ]);
 
-    $this->drupalGet('/');
+    $this->createNode([
+      'status' => NodeInterface::PUBLISHED,
+      'type' => 'announcement',
+      'title' => 'UK announcement (uk)',
+      'body' => 'Announcement content',
+      'field_announcement_type' => 'notification',
+      'langcode' => 'uk',
+    ]);
 
+    $this->drupalGet('/');
     $this->assertSession()->pageTextContains('Old test survey');
     $this->assertSession()->pageTextNotContains('New test survey');
     $this->assertSession()->pageTextContains('Test announcement');
 
-    $this->drupalGet($this->testNode->toUrl());
+    // Local announcements can be translated.pages
+    // English announcements are shown on alt language pages.
+    $this->drupalGet('/', ['language' => \Drupal::languageManager()->getLanguage('uk')]);
+    $this->assertSession()->pageTextContains('UK announcement');
+    $this->assertSession()->pageTextContains('Test announcement');
 
+    // Tests page filtering.
+    $this->drupalGet($this->testNode->toUrl());
     $this->assertSession()->pageTextContains('New test survey');
     $this->assertSession()->pageTextNotContains('Old test survey');
     $this->assertSession()->pageTextContains('Test announcement');