diff --git a/Model/UserInterface.php b/Model/UserInterface.php
deleted file mode 100644
index 379225b..0000000
--- a/Model/UserInterface.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Alchemy\AclBundle;
-
-interface UserInterface
-{
-    public function getId(): string;
-
-    /**
-     * @return string[]
-     */
-    public function getGroupIds(): array;
-}
diff --git a/UserInterface.php b/UserInterface.php
deleted file mode 100644
index 379225b..0000000
--- a/UserInterface.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Alchemy\AclBundle;
-
-interface UserInterface
-{
-    public function getId(): string;
-
-    /**
-     * @return string[]
-     */
-    public function getGroupIds(): array;
-}