diff --git a/src/Configurations/Configuration.php b/src/Configurations/Configuration.php
index b963644..e05d85f 100644
--- a/src/Configurations/Configuration.php
+++ b/src/Configurations/Configuration.php
@@ -9,7 +9,6 @@
 
 namespace Nextras\Migrations\Configurations;
 
-use Nette\Utils\Validators;
 use Nextras\Migrations\Entities\Group;
 use Nextras\Migrations\IConfiguration;
 use Nextras\Migrations\IExtensionHandler;