diff --git a/src/Entity/MobileNumber.php b/src/Entity/MobileNumber.php
index 9229ec27..7ddef1ab 100644
--- a/src/Entity/MobileNumber.php
+++ b/src/Entity/MobileNumber.php
@@ -5,6 +5,7 @@ namespace App\Entity;
 use Doctrine\ORM\Mapping as ORM;
 
 use Symfony\Component\Validator\Constraints as Assert;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 
 /**
  * @ORM\Entity