diff --git a/src/Monitor/Framework/Entity/Monitor.php b/src/Monitor/Framework/Entity/Monitor.php
index 467c851..e2b0a2f 100644
--- a/src/Monitor/Framework/Entity/Monitor.php
+++ b/src/Monitor/Framework/Entity/Monitor.php
@@ -68,7 +68,7 @@ class Monitor
     #[ORM\ManyToOne(targetEntity: self::class, inversedBy: 'children')]
     private ?self $parent = null;
 
-    #[ORM\OneToMany(targetEntity: self::class, mappedBy: 'parent')]
+    #[ORM\OneToMany(targetEntity: self::class, mappedBy: 'parent', cascade: ['remove'])]
     private Collection $children;
 
     public function __construct()