diff --git a/src/Metadata/Property/Factory/SerializerPropertyMetadataFactory.php b/src/Metadata/Property/Factory/SerializerPropertyMetadataFactory.php
index d7412a59268..d80cc055923 100644
--- a/src/Metadata/Property/Factory/SerializerPropertyMetadataFactory.php
+++ b/src/Metadata/Property/Factory/SerializerPropertyMetadataFactory.php
@@ -58,14 +58,6 @@ public function create(string $resourceClass, string $property, array $options =
 
             [$normalizationAttributes, $denormalizationAttributes] = $this->getEffectiveSerializerAttributes($options);
 
-            if ($normalizationAttributes && !\is_array($normalizationAttributes)) {
-                $normalizationAttributes = [$normalizationAttributes];
-            }
-
-            if ($denormalizationAttributes && !\is_array($denormalizationAttributes)) {
-                $denormalizationAttributes = [$denormalizationAttributes];
-            }
-
             $ignoredAttributes = $options['ignored_attributes'] ?? [];
         } catch (ResourceClassNotFoundException) {
             // TODO: for input/output classes, the serializer groups must be read from the actual resource class