diff --git a/src/Service/ResourceChannelBasedIndexName.php b/src/Service/ResourceChannelBasedIndexName.php
index f9f2541..bdd998c 100644
--- a/src/Service/ResourceChannelBasedIndexName.php
+++ b/src/Service/ResourceChannelBasedIndexName.php
@@ -58,6 +58,15 @@ private function langToAvailableLocale(
             return '';
         }
 
+        $defaultChannelLang = $resourceChannel->locale;
+        $sepPos = strpos($defaultChannelLang, '_');
+        if ($sepPos !== false) {
+            $defaultChannelLang = substr($defaultChannelLang, 0, $sepPos);
+        }
+        if ($lang->code === $defaultChannelLang) {
+            return '';
+        }
+
         foreach (
             $resourceChannel->translationLocales as $availableLocale
         ) {
diff --git a/test/Service/Indexer/InternalResourceIndexerTest.php b/test/Service/Indexer/InternalResourceIndexerTest.php
index d4ed0ff..26cdec0 100644
--- a/test/Service/Indexer/InternalResourceIndexerTest.php
+++ b/test/Service/Indexer/InternalResourceIndexerTest.php
@@ -174,6 +174,13 @@ public function testGetIndex(): void
         );
     }
 
+    public function testGetStatus(): void
+    {
+        $this->indexerProgressHandler->expects($this->once())
+            ->method('getStatus');
+        $this->indexer->getStatus();
+    }
+
     public function testAbort(): void
     {
         $this->aborter->expects($this->once())
diff --git a/test/Service/Indexer/SiteKit/DefaultSchema2xDocumentEnricherTest.php b/test/Service/Indexer/SiteKit/DefaultSchema2xDocumentEnricherTest.php
index 5ecd1c5..b8f11ab 100644
--- a/test/Service/Indexer/SiteKit/DefaultSchema2xDocumentEnricherTest.php
+++ b/test/Service/Indexer/SiteKit/DefaultSchema2xDocumentEnricherTest.php
@@ -14,18 +14,21 @@
 use Atoolo\Search\Service\Indexer\IndexSchema2xDocument;
 use Atoolo\Search\Service\Indexer\SiteKit\DefaultSchema2xDocumentEnricher;
 use DateTime;
+use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
 
 class DefaultSchema2xDocumentEnricherTest extends TestCase
 {
     private DefaultSchema2xDocumentEnricher $enricher;
 
+    private SiteKitNavigationHierarchyLoader&MockObject $navigationLoader;
+
     public function setUp(): void
     {
-        $navigationLoader = $this->createStub(
+        $this->navigationLoader = $this->createMock(
             SiteKitNavigationHierarchyLoader::class
         );
-        $navigationLoader
+        $this->navigationLoader
             ->method('loadRoot')
             ->willReturnCallback(function ($location) {
                 if ($location->location === 'throwException') {
@@ -41,11 +44,18 @@ public function setUp(): void
             ->willReturn('collected content');
 
         $this->enricher = new DefaultSchema2xDocumentEnricher(
-            $navigationLoader,
+            $this->navigationLoader,
             $contentCollector
         );
     }
 
+    public function testCleanup(): void
+    {
+        $this->navigationLoader->expects($this->once())
+            ->method('cleanup');
+        $this->enricher->cleanup();
+    }
+
     public function testEnrichSpId(): void
     {
         $resource = new Resource(
diff --git a/test/Service/ResourceChannelBasedIndexNameTest.php b/test/Service/ResourceChannelBasedIndexNameTest.php
index e80fbdd..39f341d 100644
--- a/test/Service/ResourceChannelBasedIndexNameTest.php
+++ b/test/Service/ResourceChannelBasedIndexNameTest.php
@@ -25,7 +25,7 @@ public function setUp(): void
             '',
             false,
             '',
-            '',
+            'de_DE',
             '',
             '',
             '',
@@ -68,6 +68,16 @@ public function testNameWithEmptyLang(): void
         );
     }
 
+    public function testNameWithResourceChannelDefaultLang(): void
+    {
+        $this->assertEquals(
+            'test',
+            $this->indexName->name(ResourceLanguage::of('de')),
+            'The default index name should be returned ' .
+            'if the default language is given'
+        );
+    }
+
     public function testNameWithUnsupportedLang(): void
     {
         $this->expectException(UnsupportedIndexLanguageException::class);