diff --git a/src/Form/Model/ParticipantData.php b/src/Form/Model/ParticipantData.php
index 2e3fb0e..2334f30 100644
--- a/src/Form/Model/ParticipantData.php
+++ b/src/Form/Model/ParticipantData.php
@@ -32,6 +32,7 @@ class ParticipantData
     #[Assert\NotNull(message: 'Bitte angeben')]
     public ?\DateTimeImmutable $dateOfBirth = null;
 
+    #[Assert\NotBlank(message: 'Bitte angeben')]
     #[Assert\Email(message: 'Bitte eine gültige E-Mail Adresse angeben', mode: 'strict')]
     public ?string $email = null;