diff --git a/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau01.php b/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau01.php
index 232ab7b7..d4dfeca3 100644
--- a/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau01.php
+++ b/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau01.php
@@ -30,7 +30,7 @@ class Niveau01
     private $label;
 
     /**
-     * @ORM\Column(type="string", length=9)
+     * @ORM\Column(type="string", length=9, nullable=true)
      */
     private $siren;
 
diff --git a/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau02.php b/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau02.php
index cd406662..9e1f6508 100644
--- a/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau02.php
+++ b/src/ninegate-1.0/src/Cadoles/CoreBundle/Entity/Niveau02.php
@@ -29,7 +29,7 @@ class Niveau02
     private $label;
 
     /**
-     * @ORM\Column(type="string", length=14)
+     * @ORM\Column(type="string", length=14, nullable=true)
      */
     private $siret;
 
diff --git a/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau01Type.php b/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau01Type.php
index e12e5ab7..ccdf3290 100644
--- a/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau01Type.php
+++ b/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau01Type.php
@@ -42,6 +42,7 @@ class Niveau01Type extends AbstractType
             TextType::class, array(
                 "label"       => $options["labelsiren"],
                 "disabled"    => ($options["mode"]=="delete"?true:false),
+                "required"    => false,
                 "attr"        => array("class" => "form-control", "style" => "margin-bottom:15px")
             )
         );   
diff --git a/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau02Type.php b/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau02Type.php
index b16015de..a879ab5a 100644
--- a/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau02Type.php
+++ b/src/ninegate-1.0/src/Cadoles/CoreBundle/Form/Niveau02Type.php
@@ -54,6 +54,7 @@ class Niveau02Type extends AbstractType
             TextType::class, array(
                 "label"       =>"SIRET",
                 "disabled"    => ($options["mode"]=="delete"?true:false),
+                "required"    => false,
                 "attr"        => array("class" => "form-control", "style" => "margin-bottom:15px")
             )
         );