diff --git a/lib/Service/CommentService.php b/lib/Service/CommentService.php
index f773e41dc..e5d4bc140 100644
--- a/lib/Service/CommentService.php
+++ b/lib/Service/CommentService.php
@@ -72,7 +72,7 @@ private function get(int $cardId, int $commentId): IComment {
 			throw new NotFoundException('No comment found.');
 		}
 		if ($comment->getParentId() !== '0') {
-			$this->permissionService->checkPermission($this->cardMapper, (int)$comment->getParentId(), Acl::PERMISSION_READ);
+			$this->permissionService->checkPermission($this->cardMapper, (int)$comment->getObjectId(), Acl::PERMISSION_READ);
 		}
 
 		return $comment;