diff --git a/src/Helper/StringHelper.php b/src/Helper/StringHelper.php
index d60a808..b5cb7fa 100644
--- a/src/Helper/StringHelper.php
+++ b/src/Helper/StringHelper.php
@@ -6,8 +6,6 @@
 
 use Symfony\Component\String\Slugger\SluggerInterface;
 
-use function Symfony\Component\String\u;
-
 /**
  * This is a simple service just to create a unit test example.
  *
@@ -22,6 +20,6 @@ public function __construct(
 
     public function slugify(?string $string): string
     {
-        return $this->slugger->slug(u($string)->lower()->toString())->toString();
+        return $this->slugger->slug((string) $string)->lower()->toString();
     }
 }