diff --git a/src/qr/qr-token.service.ts b/src/qr/qr-token.service.ts
index e884134..1d2fa6e 100644
--- a/src/qr/qr-token.service.ts
+++ b/src/qr/qr-token.service.ts
@@ -110,13 +110,14 @@ export class QrTokenService {
           return null;
         }
 
-        return {
-          id_participante: decoded.id_participante,
-          id_evento: decoded.id_evento,
-          id_cuestionario: decoded.id_cuestionario,
-          type: decoded.type,
-          iat: decoded.iat,
-        };
+      return {
+        id_participante: decoded.id_participante,
+        id_evento: decoded.id_evento,
+        id_cuestionario: decoded.id_cuestionario,
+        type: decoded.type,
+        iat: decoded.iat,
+        exp: decoded.exp,
+      };
     } catch (error) {
       console.error('Error validando token QR:', error.message);
       return null;