diff --git a/src/Bundle/ChillActivityBundle/Entity/Activity.php b/src/Bundle/ChillActivityBundle/Entity/Activity.php
index ae310f775..e25448f10 100644
--- a/src/Bundle/ChillActivityBundle/Entity/Activity.php
+++ b/src/Bundle/ChillActivityBundle/Entity/Activity.php
@@ -158,7 +158,7 @@ class Activity implements HasCenterInterface, HasScopeInterface, AccompanyingPer
     private ?Collection $thirdParties = null;
 
     /**
-     * @ORM\ManyToMany(targetEntity="Chill\DocStoreBundle\Entity\StoredObject")
+     * @ORM\ManyToMany(targetEntity="Chill\DocStoreBundle\Entity\StoredObject", cascade={"persist"})
      */
     private Collection $documents;