diff --git a/.changes/unreleased/Fixed-20230913-122616.yaml b/.changes/unreleased/Fixed-20230913-122616.yaml
new file mode 100644
index 000000000..230baed41
--- /dev/null
+++ b/.changes/unreleased/Fixed-20230913-122616.yaml
@@ -0,0 +1,5 @@
+kind: Fixed
+body: Fix filter "accompanying course by social action" to avoid duplication in list
+time: 2023-09-13T12:26:16.38720953+02:00
+custom:
+  Issue: "143"
diff --git a/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/SocialActionFilter.php b/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/SocialActionFilter.php
index 0c14ba73a..c485412cb 100644
--- a/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/SocialActionFilter.php
+++ b/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/SocialActionFilter.php
@@ -12,28 +12,17 @@ declare(strict_types=1);
 namespace Chill\PersonBundle\Export\Filter\AccompanyingCourseFilters;
 
 use Chill\MainBundle\Export\FilterInterface;
-use Chill\MainBundle\Templating\TranslatableStringHelper;
+use Chill\PersonBundle\Entity\AccompanyingPeriod;
 use Chill\PersonBundle\Entity\SocialWork\SocialAction;
 use Chill\PersonBundle\Export\Declarations;
 use Chill\PersonBundle\Form\Type\PickSocialActionType;
 use Chill\PersonBundle\Templating\Entity\SocialActionRender;
 use Doctrine\ORM\QueryBuilder;
 use Symfony\Component\Form\FormBuilderInterface;
-use function in_array;
 
-class SocialActionFilter implements FilterInterface
+final readonly class SocialActionFilter implements FilterInterface
 {
-    private SocialActionRender $actionRender;
-
-    private TranslatableStringHelper $translatableStringHelper;
-
-    public function __construct(
-        TranslatableStringHelper $translatableStringHelper,
-        SocialActionRender $actionRender
-    ) {
-        $this->translatableStringHelper = $translatableStringHelper;
-        $this->actionRender = $actionRender;
-    }
+    public function __construct(private SocialActionRender $actionRender) {}
 
     public function addRole(): ?string
     {
@@ -42,21 +31,17 @@ class SocialActionFilter implements FilterInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        if (!in_array('acpw', $qb->getAllAliases(), true)) {
-            $qb->join('acp.works', 'acpw');
-        }
+        $qb->andWhere(
+            $qb->expr()->exists(
+                sprintf(
+                    "SELECT 1 FROM %s acp_by_social_action_filter WHERE acp_by_social_action_filter.socialAction "
+                    . "IN (:acp_by_social_action_filter_actions) AND acp_by_social_action_filter.accompanyingPeriod = acp",
+                    AccompanyingPeriod\AccompanyingPeriodWork::class
+                )
+            )
+        );
 
-        if (!in_array('acpwsocialaction', $qb->getAllAliases(), true)) {
-            $qb->join('acpw.socialAction', 'acpwsocialaction');
-        }
-
-        $clause = $qb->expr()->in('acpwsocialaction.id', ':socialactions');
-
-        $qb->andWhere($clause)
-            ->setParameter(
-                'socialactions',
-                SocialAction::getDescendantsWithThisForActions($data['accepted_socialactions'])->toArray()
-            );
+        $qb->setParameter('acp_by_social_action_filter_actions', SocialAction::getDescendantsWithThisForActions($data['accepted_socialactions']));
     }
 
     public function applyOn(): string