diff --git a/src/qr/qr-token.service.ts b/src/qr/qr-token.service.ts
index 8f00e68..cc841a2 100644
--- a/src/qr/qr-token.service.ts
+++ b/src/qr/qr-token.service.ts
@@ -119,6 +119,7 @@ export class QrTokenService {
         type: string;
         iat: number;
         contador?: number | null;
+        exp: number;
       } = {
         id_participante: decoded.id_participante,
         id_evento: decoded.id_evento,