diff --git a/lib/Controller/CardApiController.php b/lib/Controller/CardApiController.php
index e1e9d4ca9..276892f4c 100644
--- a/lib/Controller/CardApiController.php
+++ b/lib/Controller/CardApiController.php
@@ -185,7 +185,7 @@ class CardApiController extends ApiController {
 	 * Reorder cards
 	 */
 	public function reorder($stackId, $order) {
-		$card = $this->cardService->reorder($this->request->getParam('cardId'), $stackId, $order);
+		$card = $this->cardService->reorder((int)$this->request->getParam('cardId'), (int)$stackId, (int)$order);
 		return new DataResponse($card, HTTP::STATUS_OK);
 	}
 }
diff --git a/lib/Service/CardService.php b/lib/Service/CardService.php
index 8fad26447..1c84771a8 100644
--- a/lib/Service/CardService.php
+++ b/lib/Service/CardService.php
@@ -439,7 +439,7 @@ class CardService {
 	 * @throws \OCP\AppFramework\Db\MultipleObjectsReturnedException
 	 * @throws BadRequestException
 	 */
-	public function reorder($id, $stackId, $order) {
+	public function reorder(int $id, int $stackId, int $order) {
 		$this->cardServiceValidator->check(compact('id', 'stackId', 'order'));
 
 		$this->permissionService->checkPermission($this->cardMapper, $id, Acl::PERMISSION_EDIT);