diff --git a/src/Form/UserProfileType.php b/src/Form/UserProfileType.php
index e644b41..ef768bf 100644
--- a/src/Form/UserProfileType.php
+++ b/src/Form/UserProfileType.php
@@ -13,6 +13,7 @@ use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 use Symfony\Component\Validator\Constraints\Image;
 use Symfony\Component\Validator\Constraints\Length;
+use Symfony\Component\Validator\Constraints\NotBlank;
 use Symfony\Component\Validator\Constraints\Regex;
 
 class UserProfileType extends AbstractType
@@ -35,6 +36,7 @@ class UserProfileType extends AbstractType
             ->add('alternateEmail', EmailType::class, [
                 'label' => 'E-mail de secours',
                 'constraints' => [
+                    new NotBlank(message: 'L\'adresse e-mail de secours est obligatoire.'),
                     new Regex(
                         pattern: '/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/',
                         message: 'L\'adresse e-mail n\'est pas valide.'