diff --git a/src/Layout/Dashboard/QrCodeModels.tsx b/src/Layout/Dashboard/QrCodeModels.tsx
index 72b1b48..88844b9 100644
--- a/src/Layout/Dashboard/QrCodeModels.tsx
+++ b/src/Layout/Dashboard/QrCodeModels.tsx
@@ -42,7 +42,7 @@ const QrCodeModels: React.FC<ModalFormProps> = ({
 
       <main className="main_modal">
         <div className="ValidationField w-100 mb-5 ">
-          <QRCodeGenerator url = {`https://nerd-back.point-dev.net/api/students/question`} serial={objectToEdit.serial}/>
+          <QRCodeGenerator url = {`https://nerd-back.point-dev.net/api/students/question`} serial={objectToEdit?.serial}/>
         </div>
       </main>
     </Modal>