diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
index e786ad7ce..a86f39f62 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
@@ -1902,11 +1902,11 @@ namespace IRaCIS.Core.Application.Service
             if (param == "-10")
             {
                 var questionMarkList = inDto.QuestionMarkInfoList.Select(x => x.QuestionId).ToList();
-                if (!(await _readingTaskQuestionMarkRepository.AnyAsync(x => x.VisitTaskId == inDto.VisitTaskId&&x.MeasureData.IsNotNullOrEmpty() && questionMarkList.Contains(x.QuestionId))) && inDto.QuestionMarkInfoList.Count(x=>x.MeasureData.IsNotNullOrEmpty()) > 0)
+                if (!(await _readingTaskQuestionMarkRepository.AnyAsync(x => x.VisitTaskId == inDto.VisitTaskId&&x.MeasureData!=string.Empty && questionMarkList.Contains(x.QuestionId))) && inDto.QuestionMarkInfoList.Count(x=>x.MeasureData.IsNotNullOrEmpty()) > 0)
                 {
                     _userInfo.AuditIdentification = "AddMark";
                 }
-                else if (await _readingTaskQuestionMarkRepository.AnyAsync(x => x.VisitTaskId == inDto.VisitTaskId &&x.MeasureData.IsNotNullOrEmpty() && questionMarkList.Contains(x.QuestionId)))
+                else if (await _readingTaskQuestionMarkRepository.AnyAsync(x => x.VisitTaskId == inDto.VisitTaskId &&x.MeasureData != string.Empty && questionMarkList.Contains(x.QuestionId)))
                 {
                     _userInfo.AuditIdentification = "UpdateMark";
                 }