diff --git a/src/Domain/Entity/EmailFooter.php b/src/Domain/Entity/EmailFooter.php
index 53c99a1..9d5ca1c 100644
--- a/src/Domain/Entity/EmailFooter.php
+++ b/src/Domain/Entity/EmailFooter.php
@@ -37,8 +37,8 @@ class EmailFooter
     #[ORM\Column(name: 'description', type: 'string', nullable: true)]
     private ?string $description;
 
-    #[ORM\Column(name: 'placeholder', type: 'string', length: 600)]
-    private string $placeholder;
+    #[ORM\Column(name: 'placeholder', type: 'string', length: 600, nullable: true)]
+    private ?string $placeholder;
 
     public function getId(): int
     {
@@ -96,7 +96,7 @@ public function getDescription(): ?string
         return $this->description;
     }
 
-    public function getPlaceholder(): string
+    public function getPlaceholder(): ?string
     {
         return $this->placeholder;
     }
diff --git a/src/Infrastructure/Migrations/Version20230911112032.php b/src/Infrastructure/Migrations/Version20230911112032.php
index cd5f28f..8fd319f 100644
--- a/src/Infrastructure/Migrations/Version20230911112032.php
+++ b/src/Infrastructure/Migrations/Version20230911112032.php
@@ -11,7 +11,7 @@ final class Version20230911112032 extends AbstractMigration
 {
     public function up(Schema $schema): void
     {
-        $this->addSql('ALTER TABLE module_email_footer ADD placeholder VARCHAR(600) NOT NULL');
+        $this->addSql('ALTER TABLE module_email_footer ADD placeholder VARCHAR(600) DEFAULT NULL');
     }
 
     public function down(Schema $schema): void