diff --git a/sources/classes/ClassMapper.php b/sources/classes/ClassMapper.php
index 99d44a7..0c98a7f 100644
--- a/sources/classes/ClassMapper.php
+++ b/sources/classes/ClassMapper.php
@@ -5,7 +5,7 @@ namespace goodboyalex\php_components_pack\classes;
 use DateTimeImmutable;
 use DateTimeInterface;
 use Exception;
-use ReflectionAttribute;
+use goodboyalex\php_components_pack\attributes\GetOnly;
 use ReflectionClass;
 use ReflectionException;
 use ReflectionProperty;
@@ -98,7 +98,7 @@ final class ClassMapper
         }
 
         // Получаем список атрибутов у данного свойства
-        $attributes = $reflectionProperty->getAttributes('GetOnly', ReflectionAttribute::IS_INSTANCEOF);
+        $attributes = $reflectionProperty->getAttributes(GetOnly::class);
 
         // Возвращаем true, если атрибут найден, иначе false
         return !empty($attributes);
diff --git a/tests/classes/ClassMapperTest.php b/tests/classes/ClassMapperTest.php
index a98c9c8..46c278c 100644
--- a/tests/classes/ClassMapperTest.php
+++ b/tests/classes/ClassMapperTest.php
@@ -27,6 +27,7 @@ class ClassMapperTest extends TestCase
     {
         require_once __DIR__ . '/../data/A.php';
         require_once __DIR__ . '/../data/B.php';
+        require_once __DIR__ . '/../../sources/attributes/GetOnly.php';
         require_once __DIR__ . '/../../sources/classes/classMapper.php';
     }
 }
\ No newline at end of file