diff --git a/eZ/Publish/API/Repository/Tests/PHPUnitConstraint/ContentItemEquals.php b/eZ/Publish/API/Repository/Tests/PHPUnitConstraint/ContentItemEquals.php
index c3284a0ec2..e4981c81a3 100644
--- a/eZ/Publish/API/Repository/Tests/PHPUnitConstraint/ContentItemEquals.php
+++ b/eZ/Publish/API/Repository/Tests/PHPUnitConstraint/ContentItemEquals.php
@@ -56,6 +56,11 @@ public function evaluate($content, string $description = '', bool $returnResult
                 $this->expectedContent->getThumbnail(),
                 $content->getThumbnail()
             );
+            $this->compareStrings(
+                $comparatorFactory,
+                $this->expectedContent->getDefaultLanguageCode(),
+                $content->getDefaultLanguageCode()
+            );
             $this->compareArrays(
                 $comparatorFactory,
                 $this->expectedContent->fields,
@@ -133,4 +138,20 @@ private function compareArrays(
             $actual,
         );
     }
+
+    private function compareStrings(
+        ComparatorFactory $comparatorFactory,
+        ?string $expected,
+        ?string $actual
+    ): void {
+        $comparator = $comparatorFactory->getComparatorFor(
+            $expected,
+            $actual
+        );
+
+        $comparator->assertEquals(
+            $expected,
+            $actual,
+        );
+    }
 }
diff --git a/eZ/Publish/API/Repository/Values/Content/Content.php b/eZ/Publish/API/Repository/Values/Content/Content.php
index a8516a6a5d..407bce09c1 100644
--- a/eZ/Publish/API/Repository/Values/Content/Content.php
+++ b/eZ/Publish/API/Repository/Values/Content/Content.php
@@ -108,4 +108,6 @@ abstract public function getField(string $fieldDefIdentifier, ?string $languageC
     abstract public function getContentType(): ContentType;
 
     abstract public function getThumbnail(): ?Thumbnail;
+
+    abstract public function getDefaultLanguageCode(): string;
 }
diff --git a/eZ/Publish/Core/Repository/Values/Content/Content.php b/eZ/Publish/Core/Repository/Values/Content/Content.php
index 6ed2cf1f88..734355f3b9 100644
--- a/eZ/Publish/Core/Repository/Values/Content/Content.php
+++ b/eZ/Publish/Core/Repository/Values/Content/Content.php
@@ -92,7 +92,7 @@ public function getContentType(): ContentType
     public function getFieldValue(string $fieldDefIdentifier, ?string $languageCode = null): ?Value
     {
         if (null === $languageCode) {
-            $languageCode = $this->prioritizedFieldLanguageCode ?: $this->versionInfo->contentInfo->mainLanguageCode;
+            $languageCode = $this->getDefaultLanguageCode();
         }
 
         if (isset($this->fields[$fieldDefIdentifier][$languageCode])) {
@@ -118,7 +118,7 @@ public function getFieldsByLanguage(?string $languageCode = null): iterable
         $fields = [];
 
         if (null === $languageCode) {
-            $languageCode = $this->prioritizedFieldLanguageCode ?: $this->versionInfo->contentInfo->mainLanguageCode;
+            $languageCode = $this->getDefaultLanguageCode();
         }
 
         foreach ($this->getFields() as $field) {
@@ -137,7 +137,7 @@ public function getFieldsByLanguage(?string $languageCode = null): iterable
     public function getField(string $fieldDefIdentifier, ?string $languageCode = null): ?Field
     {
         if (null === $languageCode) {
-            $languageCode = $this->prioritizedFieldLanguageCode ?: $this->versionInfo->contentInfo->mainLanguageCode;
+            $languageCode = $this->getDefaultLanguageCode();
         }
 
         foreach ($this->getFields() as $field) {
@@ -150,6 +150,11 @@ public function getField(string $fieldDefIdentifier, ?string $languageCode = nul
         return null;
     }
 
+    public function getDefaultLanguageCode(): string
+    {
+        return $this->prioritizedFieldLanguageCode ?: $this->versionInfo->contentInfo->mainLanguageCode;
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/eZ/Publish/Core/Repository/Values/User/User.php b/eZ/Publish/Core/Repository/Values/User/User.php
index ff405b32a8..1c027f4a8a 100644
--- a/eZ/Publish/Core/Repository/Values/User/User.php
+++ b/eZ/Publish/Core/Repository/Values/User/User.php
@@ -188,4 +188,9 @@ public function getThumbnail(): ?Thumbnail
     {
         return $this->content->getThumbnail();
     }
+
+    public function getDefaultLanguageCode(): string
+    {
+        return $this->content->getDefaultLanguageCode();
+    }
 }
diff --git a/eZ/Publish/Core/Repository/Values/User/UserGroup.php b/eZ/Publish/Core/Repository/Values/User/UserGroup.php
index 5efb8c2537..067d6edc3e 100644
--- a/eZ/Publish/Core/Repository/Values/User/UserGroup.php
+++ b/eZ/Publish/Core/Repository/Values/User/UserGroup.php
@@ -187,4 +187,9 @@ public function getThumbnail(): ?Thumbnail
     {
         return $this->content->getThumbnail();
     }
+
+    public function getDefaultLanguageCode(): string
+    {
+        return $this->content->getDefaultLanguageCode();
+    }
 }
diff --git a/tests/integration/Core/Repository/Values/Content/DefaultLanguageCodeForContentTest.php b/tests/integration/Core/Repository/Values/Content/DefaultLanguageCodeForContentTest.php
new file mode 100644
index 0000000000..a614437f2f
--- /dev/null
+++ b/tests/integration/Core/Repository/Values/Content/DefaultLanguageCodeForContentTest.php
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * @copyright Copyright (C) Ibexa AS. All rights reserved.
+ * @license For full copyright and license information view LICENSE file distributed with this source code.
+ */
+declare(strict_types=1);
+
+namespace Ibexa\Tests\Integration\Core\Repository\Values\Content;
+
+use eZ\Publish\API\Repository\Tests\BaseTest;
+
+final class DefaultLanguageCodeForContentTest extends BaseTest
+{
+    /**
+     * @throws \eZ\Publish\API\Repository\Exceptions\ForbiddenException
+     * @throws \eZ\Publish\API\Repository\Exceptions\NotFoundException
+     * @throws \eZ\Publish\API\Repository\Exceptions\UnauthorizedException
+     */
+    public function testDefaultLanguageCodeForCreatedContentWithoutPrioritizedLanguage(): void
+    {
+        $names = [
+            'eng-GB' => 'Test GB',
+            'ger-DE' => 'Test DE',
+            'eng-US' => 'Test US',
+        ];
+        $testFolder = $this->createFolder(
+            $names,
+            2,
+            null,
+            false
+        );
+
+        self::assertEquals('eng-GB', $testFolder->getDefaultLanguageCode());
+    }
+
+    /**
+     * @throws \eZ\Publish\API\Repository\Exceptions\ForbiddenException
+     * @throws \eZ\Publish\API\Repository\Exceptions\NotFoundException
+     * @throws \eZ\Publish\API\Repository\Exceptions\UnauthorizedException
+     */
+    public function testDefaultLanguageCodeForCreatedContentWithPrioritizedLanguage(): void
+    {
+        $names = [
+            'eng-GB' => 'Test GB',
+            'ger-DE' => 'Test DE',
+            'eng-US' => 'Test US',
+        ];
+
+        $testFolder = $this->createFolder(
+            $names,
+            2,
+            null,
+            false
+        );
+
+        $repository = $this->getRepository();
+        $testFolderInGerman = $repository->getContentService()->loadContent($testFolder->id, ['ger-DE']);
+
+        self::assertEquals('ger-DE', $testFolderInGerman->getDefaultLanguageCode());
+    }
+}