diff --git a/backend/app/Shared/ValueObject/EmailAddress.php b/backend/app/Shared/ValueObject/EmailAddress.php
index 00ed5cf..ce7bcf9 100644
--- a/backend/app/Shared/ValueObject/EmailAddress.php
+++ b/backend/app/Shared/ValueObject/EmailAddress.php
@@ -8,8 +8,6 @@ final readonly class EmailAddress
 {
     private string $normalized;
 
-    private string $domain;
-
     private const ERROR_MESSAGE = 'Invalid email address:';
 
     public function __construct(string $email)
@@ -22,8 +20,8 @@ final readonly class EmailAddress
         }
 
         [$local, $domain] = explode('@', $trimmed, 2);
-        $this->domain = mb_strtolower($domain);
-        $normalized = $local . '@' . $this->domain;
+        $domain = mb_strtolower($domain);
+        $normalized = $local . '@' . $domain;
 
         if (filter_var($normalized, FILTER_VALIDATE_EMAIL) === false) {
             throw new InvalidArgumentException(self::ERROR_MESSAGE . " $email");
@@ -42,11 +40,6 @@ final readonly class EmailAddress
         return $this->normalized === $other->normalized;
     }
 
-    public function getDomain(): string
-    {
-        return $this->domain;
-    }
-
     public function __toString(): string
     {
         return $this->normalized;