diff --git a/Services/PeriodExamService.cs b/Services/PeriodExamService.cs
index 5d52aa2..ae72ff5 100644
--- a/Services/PeriodExamService.cs
+++ b/Services/PeriodExamService.cs
@@ -1379,7 +1379,7 @@ namespace BMA.EHR.Recurit.Exam.Service.Services
                     {
                         Number = item.Number != null ? item.Number.ToThaiNumber() : "-",
                         ExamIdenNumber = item.ExamIdenNumber != null ? item.ExamIdenNumber.ToString() : "-",
-                        CitizenId = item.CitizenId != null ? item.CitizenId.ToThaiNumber() : "-",
+                        CitizenId = item.CitizenId != null ? item.CitizenId.ToString() : "-",
                         SeatNumber = item.SeatNumber != null ? item.SeatNumber.ToThaiNumber() : "-",
                         PrefixName = item.PrefixName != null ? item.PrefixName.ToThaiNumber() : "-",
                         FullName = item.FirstName != null && item.LastName != null ? $"{item.FirstName} {item.LastName}" : "-",