diff --git a/src/Kunstmaan/MediaPagePartBundle/Entity/AudioPagePart.php b/src/Kunstmaan/MediaPagePartBundle/Entity/AudioPagePart.php
index 0d3ce7ee4d..30f14993c1 100644
--- a/src/Kunstmaan/MediaPagePartBundle/Entity/AudioPagePart.php
+++ b/src/Kunstmaan/MediaPagePartBundle/Entity/AudioPagePart.php
@@ -6,6 +6,7 @@
 use Kunstmaan\MediaBundle\Entity\Media;
 use Kunstmaan\MediaPagePartBundle\Form\AudioPagePartAdminType;
 use Kunstmaan\PagePartBundle\Entity\AbstractPagePart;
+use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * @ORM\Entity
@@ -21,6 +22,7 @@ class AudioPagePart extends AbstractPagePart
      */
     #[ORM\ManyToOne(targetEntity: Media::class)]
     #[ORM\JoinColumn(name: 'media_id', referencedColumnName: 'id')]
+    #[Assert\NotBlank]
     protected $media;
 
     /**
diff --git a/src/Kunstmaan/MediaPagePartBundle/Entity/DownloadPagePart.php b/src/Kunstmaan/MediaPagePartBundle/Entity/DownloadPagePart.php
index 696a72bb89..87f1efacb6 100644
--- a/src/Kunstmaan/MediaPagePartBundle/Entity/DownloadPagePart.php
+++ b/src/Kunstmaan/MediaPagePartBundle/Entity/DownloadPagePart.php
@@ -6,6 +6,7 @@
 use Kunstmaan\MediaBundle\Entity\Media;
 use Kunstmaan\MediaPagePartBundle\Form\DownloadPagePartAdminType;
 use Kunstmaan\PagePartBundle\Entity\AbstractPagePart;
+use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * @ORM\Entity
@@ -21,6 +22,7 @@ class DownloadPagePart extends AbstractPagePart
      */
     #[ORM\ManyToOne(targetEntity: Media::class)]
     #[ORM\JoinColumn(name: 'media_id', referencedColumnName: 'id')]
+    #[Assert\NotBlank]
     protected $media;
 
     /**
diff --git a/src/Kunstmaan/MediaPagePartBundle/Entity/ImagePagePart.php b/src/Kunstmaan/MediaPagePartBundle/Entity/ImagePagePart.php
index 686b166fa1..c16d881ac3 100644
--- a/src/Kunstmaan/MediaPagePartBundle/Entity/ImagePagePart.php
+++ b/src/Kunstmaan/MediaPagePartBundle/Entity/ImagePagePart.php
@@ -6,6 +6,7 @@
 use Kunstmaan\MediaBundle\Entity\Media;
 use Kunstmaan\MediaPagePartBundle\Form\ImagePagePartAdminType;
 use Kunstmaan\PagePartBundle\Entity\AbstractPagePart;
+use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * @ORM\Entity
@@ -39,6 +40,7 @@ class ImagePagePart extends AbstractPagePart
      */
     #[ORM\ManyToOne(targetEntity: Media::class)]
     #[ORM\JoinColumn(name: 'media_id', referencedColumnName: 'id')]
+    #[Assert\NotBlank]
     protected $media;
 
     /**
diff --git a/src/Kunstmaan/MediaPagePartBundle/Entity/SlidePagePart.php b/src/Kunstmaan/MediaPagePartBundle/Entity/SlidePagePart.php
index 7ff251f370..671c019bbb 100644
--- a/src/Kunstmaan/MediaPagePartBundle/Entity/SlidePagePart.php
+++ b/src/Kunstmaan/MediaPagePartBundle/Entity/SlidePagePart.php
@@ -6,6 +6,7 @@
 use Kunstmaan\MediaBundle\Entity\Media;
 use Kunstmaan\MediaPagePartBundle\Form\SlidePagePartAdminType;
 use Kunstmaan\PagePartBundle\Entity\AbstractPagePart;
+use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * @ORM\Entity
@@ -21,6 +22,7 @@ class SlidePagePart extends AbstractPagePart
      */
     #[ORM\ManyToOne(targetEntity: Media::class)]
     #[ORM\JoinColumn(name: 'media_id', referencedColumnName: 'id')]
+    #[Assert\NotBlank]
     protected $media;
 
     /**
diff --git a/src/Kunstmaan/MediaPagePartBundle/Entity/VideoPagePart.php b/src/Kunstmaan/MediaPagePartBundle/Entity/VideoPagePart.php
index 3a7de8833e..373bca4993 100644
--- a/src/Kunstmaan/MediaPagePartBundle/Entity/VideoPagePart.php
+++ b/src/Kunstmaan/MediaPagePartBundle/Entity/VideoPagePart.php
@@ -6,6 +6,7 @@
 use Kunstmaan\MediaBundle\Entity\Media;
 use Kunstmaan\MediaPagePartBundle\Form\VideoPagePartAdminType;
 use Kunstmaan\PagePartBundle\Entity\AbstractPagePart;
+use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * @ORM\Entity
@@ -21,6 +22,7 @@ class VideoPagePart extends AbstractPagePart
      */
     #[ORM\ManyToOne(targetEntity: Media::class)]
     #[ORM\JoinColumn(name: 'media_id', referencedColumnName: 'id')]
+    #[Assert\NotBlank]
     protected $media;
 
     /**