diff --git a/src/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactory.php b/src/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactory.php
index c4cff2055ac..9e46f5631b0 100644
--- a/src/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactory.php
+++ b/src/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactory.php
@@ -54,7 +54,7 @@ final class AttributesResourceMetadataCollectionFactory implements ResourceMetad
 
     public function __construct(ResourceMetadataCollectionFactoryInterface $decorated = null, LoggerInterface $logger = null, array $defaults = [], bool $graphQlEnabled = false)
     {
-        $this->defaults = $defaults + ['attributes' => []];
+        $this->defaults = $defaults;
         $this->decorated = $decorated;
         $this->logger = $logger ?? new NullLogger();
         $this->graphQlEnabled = $graphQlEnabled;
@@ -235,7 +235,7 @@ private function getOperationWithDefaults(ApiResource $resource, Operation $oper
     private function addGlobalDefaults($operation)
     {
         $extraProperties = $operation->getExtraProperties();
-        foreach ($this->defaults['attributes'] as $key => $value) {
+        foreach ($this->defaults as $key => $value) {
             [$newKey, $value] = $this->getKeyValue($key, $value);
             $upperKey = ucfirst($newKey);
             $getter = 'get'.$upperKey;
diff --git a/tests/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactoryTest.php b/tests/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactoryTest.php
index f75eb377806..8f60b10803a 100644
--- a/tests/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactoryTest.php
+++ b/tests/Metadata/Resource/Factory/AttributesResourceMetadataCollectionFactoryTest.php
@@ -137,7 +137,7 @@ class: AttributeResources::class,
 
     public function testCreateWithDefaults(): void
     {
-        $attributeResourceMetadataCollectionFactory = new AttributesResourceMetadataCollectionFactory(null, null, ['attributes' => ['cache_headers' => ['max_age' => 60], 'non_existing_attribute' => 'foo']]);
+        $attributeResourceMetadataCollectionFactory = new AttributesResourceMetadataCollectionFactory(null, null, ['cache_headers' => ['max_age' => 60], 'non_existing_attribute' => 'foo']);
 
         $operation = new HttpOperation(shortName: 'AttributeDefaultOperations', class: AttributeDefaultOperations::class, cacheHeaders: ['max_age' => 60], paginationItemsPerPage: 10, extraProperties: ['non_existing_attribute' => 'foo']);
 
@@ -165,9 +165,7 @@ public function testCreateShouldNotOverrideWithDefault(): void
     {
         $attributeResourceMetadataCollectionFactory = new AttributesResourceMetadataCollectionFactory(
             null, null, [
-                'attributes' => [
-                    'pagination_items_per_page' => 3,
-                ],
+                'pagination_items_per_page' => 3,
             ]
         );