diff --git a/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php b/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
index dabcec8eb..b108d086b 100644
--- a/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
+++ b/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
@@ -346,7 +346,6 @@ class StoredObject implements Document, TrackCreationInterface
             throw new \UnexpectedValueException('This stored object does not contains this version');
         }
         $this->versions->removeElement($storedObjectVersion);
-        $storedObjectVersion->resetStoredObject();
     }
 
     /**
diff --git a/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectVersion.php b/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectVersion.php
index 8526cd9a9..fed183057 100644
--- a/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectVersion.php
+++ b/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectVersion.php
@@ -33,13 +33,6 @@ class StoredObjectVersion implements TrackCreationInterface
     #[ORM\Column(type: \Doctrine\DBAL\Types\Types::INTEGER)]
     private ?int $id = null;
 
-    /**
-     * The stored object associated with this version.
-     */
-    #[ORM\ManyToOne(targetEntity: StoredObject::class, inversedBy: 'versions')]
-    #[ORM\JoinColumn(name: 'stored_object_id', nullable: true)]
-    private ?StoredObject $storedObject;
-
     /**
      * filename of the version in the stored object.
      */
@@ -47,7 +40,12 @@ class StoredObjectVersion implements TrackCreationInterface
     private string $filename = '';
 
     public function __construct(
-        StoredObject $storedObject,
+        /**
+         * The stored object associated with this version.
+         */
+        #[ORM\ManyToOne(targetEntity: StoredObject::class, inversedBy: 'versions')]
+        #[ORM\JoinColumn(name: 'stored_object_id', nullable: false)]
+        private StoredObject $storedObject,
 
         /**
          * The incremental version.
@@ -78,7 +76,6 @@ class StoredObjectVersion implements TrackCreationInterface
         private string $type = '',
         ?string $filename = null,
     ) {
-        $this->storedObject = $storedObject;
         $this->filename = $filename ?? self::generateFilename($this);
     }
 
@@ -127,12 +124,4 @@ class StoredObjectVersion implements TrackCreationInterface
     {
         return $this->version;
     }
-
-    /**
-     * @internal to be used by StoredObject::removeVersion
-     */
-    public function resetStoredObject(): void
-    {
-        $this->storedObject = null;
-    }
 }
diff --git a/src/Bundle/ChillDocStoreBundle/migrations/Version20240709102730.php b/src/Bundle/ChillDocStoreBundle/migrations/Version20240709102730.php
index 4ac01b196..4fc68da1f 100644
--- a/src/Bundle/ChillDocStoreBundle/migrations/Version20240709102730.php
+++ b/src/Bundle/ChillDocStoreBundle/migrations/Version20240709102730.php
@@ -28,7 +28,7 @@ final class Version20240709102730 extends AbstractMigration
             <<<'SQL'
                 CREATE TABLE chill_doc.stored_object_version (
                     id INT NOT NULL,
-                    stored_object_id INT DEFAULT NULL,
+                    stored_object_id INT NOT NULL,
                     version INT DEFAULT 0 NOT NULL,
                     filename TEXT NOT NULL,
                     iv JSON NOT NULL,