diff --git a/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php b/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php
index ef30a7783..d1652cc89 100644
--- a/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php
+++ b/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php
@@ -68,10 +68,10 @@ final class SingleTaskAclAwareRepository implements SingleTaskAclAwareRepository
 
             foreach ($users as $key => $user) {
                 $orXUser->add(
-                    $qb->expr()->eq('t.assignee', ':user')
+                    $qb->expr()->eq('t.assignee', ':user_' . $key)
                 );
 
-                $qb->setParameter('user', $user);
+                $qb->setParameter('user_' . $key, $user);
             }
 
             if ($orXUser->count() > 0) {