diff --git a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php
index 5a877e264..e08a6de77 100644
--- a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php
+++ b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php
@@ -23,7 +23,7 @@ class Evaluation
     private $title = [];
 
     /**
-     * @ORM\Column(type="dateinterval")
+     * @ORM\Column(type="dateinterval", nullable=true)
      */
     private $delay;
 
diff --git a/src/Bundle/ChillPersonBundle/migrations/Version20210624131722.php b/src/Bundle/ChillPersonBundle/migrations/Version20210624131722.php
new file mode 100644
index 000000000..ebeb33e50
--- /dev/null
+++ b/src/Bundle/ChillPersonBundle/migrations/Version20210624131722.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Person;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20210624131722 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_person_social_work_evaluation ALTER delay DROP NOT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_person_social_work_evaluation ALTER delay SET NOT NULL');
+    }
+}
diff --git a/src/Bundle/ChillPersonBundle/migrations/Version20210624131723.php b/src/Bundle/ChillPersonBundle/migrations/Version20210624131723.php
new file mode 100644
index 000000000..d36d23733
--- /dev/null
+++ b/src/Bundle/ChillPersonBundle/migrations/Version20210624131723.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Person;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20210624131723 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_person_social_work_evaluation ALTER notificationdelay DROP NOT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_person_social_work_evaluation ALTER notificationdelay SET NOT NULL');
+    }
+}