diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/General/GeneralCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/General/GeneralCalculateService.cs
index 9b9b4bfda..cf871e269 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/General/GeneralCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/General/GeneralCalculateService.cs
@@ -276,7 +276,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
 
                             tableAnswerList.Where(x => x.RowId == item.Id).ForEach(x =>
                             {
-                                x.Answer = x.Answer.IsNotNullOrEmpty() ?
+                                x.Answer = x.Answer.IsNullOrEmpty() ?
                                 historyTableAnswerList.Where(y => y.RowId == historyRow.Id && y.TableQuestionId == x.TableQuestionId).Select(x => x.Answer).FirstOrDefault()??string.Empty :
                                 x.Answer;
                             });