diff --git a/public/main/inc/lib/SkillModel.php b/public/main/inc/lib/SkillModel.php
index 37ecb3777e..bfcaed0953 100644
--- a/public/main/inc/lib/SkillModel.php
+++ b/public/main/inc/lib/SkillModel.php
@@ -288,7 +288,7 @@ class SkillModel extends Model
                 'criteria' => $skill->getCriteria(),
                 'status' => $skill->getStatus(),
                 'asset_id' => (string) $skill->getAsset()?->getId(),
-                'profile_id' => $skill->getProfile()?->getId(),
+                'profile_id' => $skill->getLevelProfile()?->getId(),
                 'icons_small' => sprintf('badges/%s-small.png', sha1($skill['title'])),
             ];
         }
@@ -1023,7 +1023,7 @@ class SkillModel extends Model
         if (!empty($skills)) {
             foreach ($skills as &$skill) {
                 if (0 == $skill['parent_id']) {
-                    $skill['parent_id'] = 1;
+                    $skill['parent_id'] = '-1';
                 }
 
                 // because except main keys (id, title, children) others keys
@@ -1070,7 +1070,7 @@ class SkillModel extends Model
 
                 // Check if the skill has related gradebooks
                 $skill['data']['skill_has_gradebook'] = false;
-                if (isset($skill['gradebooks']) && !empty($skill['gradebooks'])) {
+                if (!empty($skill['gradebooks'])) {
                     $skill['data']['skill_has_gradebook'] = true;
                 }
                 $refs[$skill['id']] = &$skill;
diff --git a/public/main/skills/assign.php b/public/main/skills/assign.php
index 6bb719aead..cc8691a48f 100644
--- a/public/main/skills/assign.php
+++ b/public/main/skills/assign.php
@@ -123,13 +123,13 @@ $skillId = isset($_REQUEST['id']) ? (int) $_REQUEST['id'] : key($skillsOptions);
 $skill = $skillRepo->find($skillId);
 $profile = false;
 if ($skill) {
-    $profile = $skill->getProfile();
+    $profile = $skill->getLevelProfile();
 }
 
 if (!empty($subSkillList)) {
     $skillFromLastSkill = $skillRepo->find(end($subSkillList));
     if ($skillFromLastSkill) {
-        $profile = $skillFromLastSkill->getProfile();
+        $profile = $skillFromLastSkill->getLevelProfile();
     }
 }
 
@@ -139,7 +139,7 @@ if (!$profile) {
     krsort($parents);
     foreach ($parents as $parent) {
         $skillParentId = $parent['skill_id'];
-        $profile = $skillRepo->find($skillParentId)->getProfile();
+        $profile = $skillRepo->find($skillParentId)->getLevelProfile();
 
         if ($profile) {
             break;
diff --git a/public/main/skills/skill.php b/public/main/skills/skill.php
index b1ea9e3b92..155e348134 100644
--- a/public/main/skills/skill.php
+++ b/public/main/skills/skill.php
@@ -1,7 +1,7 @@
 <?php
 /* For license terms, see /license.txt */
 
-use Chamilo\CoreBundle\Entity\Profile;
+use Chamilo\CoreBundle\Entity\SkillLevelProfile;
 use Chamilo\CoreBundle\Entity\Skill;
 
 /**
@@ -11,7 +11,7 @@ $cidReset = true;
 require_once __DIR__.'/../inc/global.inc.php';
 api_protect_admin_script();
 $em = Database::getManager();
-$profiles = $em->getRepository(Profile::class)->findAll();
+$profiles = $em->getRepository(SkillLevelProfile::class)->findAll();
 $list = $em->getRepository(Skill::class)->findAll();
 
 $listAction = api_get_self();
@@ -40,11 +40,11 @@ $form->addHidden('id', $id);
 $form->addButtonSave(get_lang('Update'));
 
 if (!empty($item)) {
-    $profile = $item->getProfile();
+    $profile = $item->getLevelProfile();
     if ($profile) {
         $form->setDefaults(
             [
-                'profile_id' => $item->getProfile()->getId(),
+                'profile_id' => $item->getLevelProfile()->getId(),
             ]
         );
     }
@@ -63,9 +63,9 @@ switch ($action) {
 
         if ($form->validate()) {
             $values = $form->exportValues();
-            $profile = $em->getRepository(Profile::class)->find($values['profile_id']);
+            $profile = $em->getRepository(SkillLevelProfile::class)->find($values['profile_id']);
             if ($profile) {
-                $item->setProfile($profile);
+                $item->setLevelProfile($profile);
                 $em->persist($item);
                 $em->flush();
                 Display::addFlash(Display::return_message(get_lang('Update successful')));
diff --git a/public/main/skills/skill_level.php b/public/main/skills/skill_level.php
index d9ecc4ece4..2e34a2776e 100644
--- a/public/main/skills/skill_level.php
+++ b/public/main/skills/skill_level.php
@@ -2,7 +2,7 @@
 /* For licensing terms, see /license.txt */
 
 use Chamilo\CoreBundle\Entity\Level;
-use Chamilo\CoreBundle\Entity\Profile;
+use Chamilo\CoreBundle\Entity\SkillLevelProfile;
 use Chamilo\CoreBundle\Component\Utils\ActionIcon;
 use Chamilo\CoreBundle\Component\Utils\ObjectIcon;
 /**
@@ -15,7 +15,7 @@ require_once __DIR__.'/../inc/global.inc.php';
 api_protect_admin_script();
 
 $em = Database::getManager();
-$profiles = $em->getRepository(Profile::class)->findAll();
+$profiles = $em->getRepository(SkillLevelProfile::class)->findAll();
 $list = $em->getRepository(Level::class)->findAll();
 
 $listAction = api_get_self();
@@ -64,7 +64,7 @@ switch ($action) {
         if ($form->validate()) {
             $values = $form->exportValues();
             if (isset($values['profile_id']) && !empty($values['profile_id'])) {
-                $profile = $em->getRepository(Profile::class)->find($values['profile_id']);
+                $profile = $em->getRepository(SkillLevelProfile::class)->find($values['profile_id']);
                 if ($profile) {
                     $item = new Level();
                     $item->setTitle($values['title']);
@@ -101,7 +101,7 @@ switch ($action) {
 
             $item->setTitle($values['title']);
             $item->setShortTitle($values['short_title']);
-            $profile = $em->getRepository(Profile::class)->find($values['profile_id']);
+            $profile = $em->getRepository(SkillLevelProfile::class)->find($values['profile_id']);
             if ($profile) {
                 $item->setProfile($profile);
             }
diff --git a/public/main/skills/skill_profile.php b/public/main/skills/skill_profile.php
index 0ceefc516f..c4c6aabafb 100644
--- a/public/main/skills/skill_profile.php
+++ b/public/main/skills/skill_profile.php
@@ -3,7 +3,7 @@
 /* For licensing terms, see /license.txt */
 
 use Chamilo\CoreBundle\Entity\Level;
-use Chamilo\CoreBundle\Entity\Profile;
+use Chamilo\CoreBundle\Entity\SkillLevelProfile;
 use Chamilo\CoreBundle\Entity\Skill;
 use Chamilo\CoreBundle\Component\Utils\ActionIcon;
 use Chamilo\CoreBundle\Component\Utils\ObjectIcon;
@@ -17,7 +17,7 @@ require_once __DIR__.'/../inc/global.inc.php';
 
 api_protect_admin_script();
 $em = Database::getManager();
-$list = $em->getRepository(Profile::class)->findAll();
+$list = $em->getRepository(SkillLevelProfile::class)->findAll();
 
 $listAction = api_get_self();
 
@@ -30,7 +30,7 @@ $id = isset($_GET['id']) ? $_GET['id'] : '';
 
 $item = null;
 if (!empty($id)) {
-    $item = $em->getRepository(Profile::class)->find($id);
+    $item = $em->getRepository(SkillLevelProfile::class)->find($id);
     if (!$item) {
         api_not_allowed();
     }
@@ -89,7 +89,7 @@ switch ($action) {
         $tpl->assign('form', $formToDisplay);
         if ($form->validate()) {
             $values = $form->exportValues();
-            $item = new Profile();
+            $item = new SkillLevelProfile();
             $item->setTitle($values['name']);
             $em->persist($item);
             $em->flush();
diff --git a/src/CoreBundle/Entity/Level.php b/src/CoreBundle/Entity/Level.php
index 695740e4d1..c46296d299 100644
--- a/src/CoreBundle/Entity/Level.php
+++ b/src/CoreBundle/Entity/Level.php
@@ -33,9 +33,9 @@ class Level implements Stringable
     protected string $shortTitle;
 
     #[Gedmo\SortableGroup]
-    #[ORM\ManyToOne(targetEntity: Profile::class, inversedBy: 'levels')]
+    #[ORM\ManyToOne(targetEntity: SkillLevelProfile::class, inversedBy: 'levels')]
     #[ORM\JoinColumn(name: 'profile_id', referencedColumnName: 'id')]
-    protected ?Profile $profile = null;
+    protected ?SkillLevelProfile $profile = null;
 
     public function __toString(): string
     {
@@ -89,15 +89,12 @@ class Level implements Stringable
         return $this;
     }
 
-    /**
-     * @return Profile
-     */
-    public function getProfile()
+    public function getProfile(): ?SkillLevelProfile
     {
         return $this->profile;
     }
 
-    public function setProfile(Profile $profile): self
+    public function setProfile(SkillLevelProfile $profile): self
     {
         $this->profile = $profile;
 
diff --git a/src/CoreBundle/Entity/Skill.php b/src/CoreBundle/Entity/Skill.php
index 80ad4907e7..1430bc6906 100644
--- a/src/CoreBundle/Entity/Skill.php
+++ b/src/CoreBundle/Entity/Skill.php
@@ -65,9 +65,9 @@ class Skill implements Stringable, Translatable
     #[ORM\GeneratedValue]
     protected ?int $id = null;
 
-    #[ORM\ManyToOne(targetEntity: Profile::class, inversedBy: 'skills')]
+    #[ORM\ManyToOne(targetEntity: SkillLevelProfile::class, inversedBy: 'skills')]
     #[ORM\JoinColumn(name: 'profile_id', referencedColumnName: 'id')]
-    protected ?Profile $profile = null;
+    protected ?SkillLevelProfile $levelProfile = null;
 
     /**
      * @var Collection<int, SkillRelUser>
@@ -259,14 +259,14 @@ class Skill implements Stringable, Translatable
         return $this->id;
     }
 
-    public function getProfile(): ?Profile
+    public function getLevelProfile(): ?SkillLevelProfile
     {
-        return $this->profile;
+        return $this->levelProfile;
     }
 
-    public function setProfile(Profile $profile): self
+    public function setLevelProfile(SkillLevelProfile $levelProfile): self
     {
-        $this->profile = $profile;
+        $this->levelProfile = $levelProfile;
 
         return $this;
     }
diff --git a/src/CoreBundle/Entity/Profile.php b/src/CoreBundle/Entity/SkillLevelProfile.php
similarity index 93%
rename from src/CoreBundle/Entity/Profile.php
rename to src/CoreBundle/Entity/SkillLevelProfile.php
index f3cc5be07c..2fcb10cee9 100644
--- a/src/CoreBundle/Entity/Profile.php
+++ b/src/CoreBundle/Entity/SkillLevelProfile.php
@@ -13,7 +13,7 @@ use Stringable;
 
 #[ORM\Table(name: 'skill_level_profile')]
 #[ORM\Entity]
-class Profile implements Stringable
+class SkillLevelProfile implements Stringable
 {
     #[ORM\Column(name: 'id', type: 'integer')]
     #[ORM\Id]
@@ -26,7 +26,7 @@ class Profile implements Stringable
     /**
      * @var Collection<int, Skill>
      */
-    #[ORM\OneToMany(mappedBy: 'profile', targetEntity: Skill::class, cascade: ['persist'])]
+    #[ORM\OneToMany(mappedBy: 'levelProfile', targetEntity: Skill::class, cascade: ['persist'])]
     protected Collection $skills;
 
     /**
diff --git a/tests/CoreBundle/Repository/SkillRepositoryTest.php b/tests/CoreBundle/Repository/SkillRepositoryTest.php
index 39955bc009..d5ada8e9a2 100644
--- a/tests/CoreBundle/Repository/SkillRepositoryTest.php
+++ b/tests/CoreBundle/Repository/SkillRepositoryTest.php
@@ -9,7 +9,7 @@ namespace Chamilo\Tests\CoreBundle\Repository;
 use Chamilo\CoreBundle\Entity\Asset;
 use Chamilo\CoreBundle\Entity\GradebookCategory;
 use Chamilo\CoreBundle\Entity\Level;
-use Chamilo\CoreBundle\Entity\Profile;
+use Chamilo\CoreBundle\Entity\SkillLevelProfile;
 use Chamilo\CoreBundle\Entity\Skill;
 use Chamilo\CoreBundle\Entity\SkillProfile;
 use Chamilo\CoreBundle\Entity\SkillRelCourse;
@@ -64,7 +64,7 @@ class SkillRepositoryTest extends AbstractApiTest
     {
         $em = $this->getEntityManager();
         $skillRepo = self::getContainer()->get(SkillRepository::class);
-        $profileRepo = $em->getRepository(Profile::class);
+        $profileRepo = $em->getRepository(SkillLevelProfile::class);
 
         $course = $this->createCourse('new');
         $session = $this->createSession('session');
@@ -79,7 +79,7 @@ class SkillRepositoryTest extends AbstractApiTest
         ;
         $em->persist($skillProfile);
 
-        $profile = (new Profile())
+        $profile = (new SkillLevelProfile())
             ->setTitle('profile')
         ;
         $em->persist($profile);
@@ -97,7 +97,7 @@ class SkillRepositoryTest extends AbstractApiTest
             ->setShortCode('Dev')
             ->setStatus(Skill::STATUS_ENABLED)
             ->setAccessUrlId($accessUrl->getId())
-            ->setProfile($profile)
+            ->setLevelProfile($profile)
         ;
         $skillRepo->update($skill);
 
@@ -166,7 +166,7 @@ class SkillRepositoryTest extends AbstractApiTest
         $em->flush();
         $em->clear();
 
-        /** @var Profile $profile */
+        /** @var SkillLevelProfile $profile */
         $profile = $profileRepo->find($profile->getId());
 
         /** @var Skill $skill */