diff --git a/src/Attribute/ConfigSection.php b/src/Attribute/ConfigSection.php
index 84a5fd2..69917ba 100644
--- a/src/Attribute/ConfigSection.php
+++ b/src/Attribute/ConfigSection.php
@@ -6,11 +6,10 @@
 use Borsch\Config\Config;
 use League\Container\Attribute\AttributeInterface;
 use League\Container\{ContainerAwareInterface, ContainerAwareTrait};
-use Psr\Container\ContainerExceptionInterface;
-use Psr\Container\NotFoundExceptionInterface;
+use Psr\Container\{ContainerExceptionInterface, NotFoundExceptionInterface};
 
 #[Attribute(Attribute::TARGET_PARAMETER)]
-readonly class ConfigSection implements AttributeInterface, ContainerAwareInterface
+class ConfigSection implements AttributeInterface, ContainerAwareInterface
 {
 
     use ContainerAwareTrait;
diff --git a/src/ConfigAwareInterface.php b/src/ConfigAwareInterface.php
deleted file mode 100644
index caa43aa..0000000
--- a/src/ConfigAwareInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-namespace Borsch\Config;
-
-interface ConfigAwareInterface
-{
-
-    public function setConfig(Config $config): void;
-}