diff --git a/src/Entity/Base/MasterAttachmentTrait.php b/src/Entity/Base/MasterAttachmentTrait.php
index 2637e187..17c084eb 100644
--- a/src/Entity/Base/MasterAttachmentTrait.php
+++ b/src/Entity/Base/MasterAttachmentTrait.php
@@ -48,7 +48,6 @@ trait MasterAttachmentTrait
      * @ORM\ManyToOne(targetEntity="App\Entity\Attachments\Attachment")
      * @ORM\JoinColumn(name="id_preview_attachement", referencedColumnName="id")
      * @Assert\Expression("value == null or value.isPicture()", message="part.master_attachment.must_be_picture")
-     * @ColumnSecurity(prefix="attachments", type="object")
      */
     protected $master_picture_attachment;
 
diff --git a/src/Entity/Parts/Part.php b/src/Entity/Parts/Part.php
index 34d370e5..d022394c 100644
--- a/src/Entity/Parts/Part.php
+++ b/src/Entity/Parts/Part.php
@@ -61,6 +61,7 @@ declare(strict_types=1);
 
 namespace App\Entity\Parts;
 
+use App\Entity\Attachments\Attachment;
 use App\Entity\Attachments\AttachmentContainingDBElement;
 use App\Entity\Devices\Device;
 use App\Entity\Parts\PartTraits\AdvancedPropertyTrait;
@@ -128,6 +129,14 @@ class Part extends AttachmentContainingDBElement
      */
     protected $attachments;
 
+    /**
+     * @var Attachment
+     * @ORM\ManyToOne(targetEntity="App\Entity\Attachments\Attachment")
+     * @ORM\JoinColumn(name="id_preview_attachement", referencedColumnName="id")
+     * @Assert\Expression("value == null or value.isPicture()", message="part.master_attachment.must_be_picture")
+     */
+    protected $master_picture_attachment;
+
     public function __construct()
     {
         parent::__construct();