diff --git a/src/Mappers/Proxys/MutableAdapterTrait.php b/src/Mappers/Proxys/MutableAdapterTrait.php
index f4f2f8b3ad..5c780b2471 100644
--- a/src/Mappers/Proxys/MutableAdapterTrait.php
+++ b/src/Mappers/Proxys/MutableAdapterTrait.php
@@ -39,13 +39,13 @@ public function assertValid(): void
         $this->type->assertValid();
     }
 
-    public function jsonSerialize():string
+    public function jsonSerialize(): string
     {
         return $this->type->jsonSerialize();
     }
 
 
-    public function toString():string
+    public function toString(): string
     {
         return $this->type->toString();
     }
diff --git a/src/Mappers/Proxys/MutableObjectTypeAdapter.php b/src/Mappers/Proxys/MutableObjectTypeAdapter.php
index cae384e1e0..b4256631a8 100644
--- a/src/Mappers/Proxys/MutableObjectTypeAdapter.php
+++ b/src/Mappers/Proxys/MutableObjectTypeAdapter.php
@@ -3,23 +3,11 @@
 
 namespace TheCodingMachine\GraphQLite\Mappers\Proxys;
 
-use Exception;
-use GraphQL\Error\InvariantViolation;
-use GraphQL\Type\Definition\FieldDefinition;
 use GraphQL\Type\Definition\InterfaceType;
 use GraphQL\Type\Definition\ObjectType;
 use GraphQL\Type\Definition\ResolveInfo;
-use GraphQL\Utils\Utils;
-use RuntimeException;
-use TheCodingMachine\GraphQLite\Types\MutableInterface;
 use TheCodingMachine\GraphQLite\Types\MutableObjectType;
-use TheCodingMachine\GraphQLite\Types\NoFieldsException;
 use function assert;
-use function call_user_func;
-use function is_array;
-use function is_callable;
-use function is_string;
-use function sprintf;
 
 /**
  * An adapter class (actually a proxy) that adds the "mutable" feature to any Webonyx ObjectType.
@@ -36,6 +24,7 @@ public function __construct(ObjectType $type, ?string $className = null)
         $this->type = $type;
         $this->className = $className;
         $this->name = $type->name;
+        $this->description = $type->description;
         $this->config = $type->config;
         $this->astNode = $type->astNode;
         $this->extensionASTNodes = $type->extensionASTNodes;