diff --git a/src/CoreBundle/Migrations/Schema/V200/Version20240811221400.php b/src/CoreBundle/Migrations/Schema/V200/Version20240811221400.php
index 54878492703..4913697dae7 100644
--- a/src/CoreBundle/Migrations/Schema/V200/Version20240811221400.php
+++ b/src/CoreBundle/Migrations/Schema/V200/Version20240811221400.php
@@ -478,7 +478,7 @@ public function up(Schema $schema): void
 
         // c_lp_category_rel_user
         $this->addSql('ALTER TABLE c_lp_category_rel_user DROP FOREIGN KEY IF EXISTS FK_83D35829A76ED395');
-        $this->addSql('ALTER TABLE c_lp_category_rel_user ADD CONSTRAINT FK_83D35829A76ED395 FOREIGN KEY (user_id) REFERENCES user (id) ON DELETE CASCADE');
+        $this->addSql('ALTER TABLE c_lp_category_rel_user ADD CONSTRAINT FK_83D35829A76ED395 FOREIGN KEY (user_id) REFERENCES user (id) ON DELETE SET NULL');
         $this->addSql('DROP INDEX IF EXISTS idx_61f042712469de2 ON c_lp_category_rel_user');
         $this->addSql('CREATE INDEX IF NOT EXISTS IDX_83D3582912469DE2 ON c_lp_category_rel_user (category_id)');
         $this->addSql('DROP INDEX IF EXISTS idx_61f0427a76ed395 ON c_lp_category_rel_user');
diff --git a/src/CourseBundle/Entity/CLpCategoryRelUser.php b/src/CourseBundle/Entity/CLpCategoryRelUser.php
index fa67072bd45..de65336ac83 100644
--- a/src/CourseBundle/Entity/CLpCategoryRelUser.php
+++ b/src/CourseBundle/Entity/CLpCategoryRelUser.php
@@ -30,7 +30,7 @@ class CLpCategoryRelUser implements Stringable
     protected CLpCategory $category;
 
     #[ORM\ManyToOne(targetEntity: User::class)]
-    #[ORM\JoinColumn(name: 'user_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
+    #[ORM\JoinColumn(name: 'user_id', referencedColumnName: 'id', onDelete: 'SET NULL')]
     protected User $user;
 
     public function __toString(): string