diff --git a/lib/Service/PermissionService.php b/lib/Service/PermissionService.php
index 27465e351..2d79fafa3 100644
--- a/lib/Service/PermissionService.php
+++ b/lib/Service/PermissionService.php
@@ -214,7 +214,7 @@ class PermissionService {
 		}
 
 		try {
-			$board = $this->boardMapper->find($boardId);
+			$board = $this->getBoard($boardId);
 		} catch (DoesNotExistException $e) {
 			return [];
 		} catch (MultipleObjectsReturnedException $e) {
@@ -227,7 +227,7 @@ class PermissionService {
 		} else {
 			$users[$board->getOwner()] = new User($board->getOwner(), $this->userManager);
 		}
-		$acls = $this->aclMapper->findAll($boardId);
+		$acls = $board->getAcl();
 		/** @var Acl $acl */
 		foreach ($acls as $acl) {
 			if ($acl->getType() === Acl::PERMISSION_TYPE_USER) {
diff --git a/tests/unit/Service/PermissionServiceTest.php b/tests/unit/Service/PermissionServiceTest.php
index a25a325d5..70160dc8a 100644
--- a/tests/unit/Service/PermissionServiceTest.php
+++ b/tests/unit/Service/PermissionServiceTest.php
@@ -347,9 +347,8 @@ class PermissionServiceTest extends \Test\TestCase {
 			->method('__call')
 			->with('getOwner', [])
 			->willReturn('user1');
-		$this->aclMapper->expects($this->once())
-			->method('findAll')
-			->with(123)
+		$board->expects($this->any())
+			->method('getAcl')
 			->willReturn([$aclUser, $aclGroup]);
 		$this->boardMapper->expects($this->once())
 			->method('find')