diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/IRECIST1Point1CalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/IRECIST1Point1CalculateService.cs
index 2a9a06526..c2373fe8d 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/IRECIST1Point1CalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/IRECIST1Point1CalculateService.cs
@@ -251,7 +251,8 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                             RowIndex = rowoindex,
                             BlindName = rowinfo != null ? rowinfo.BlindName : string.Empty,
                             ReportLayType = ReportLayType.Lesions,
-                            ReportMark = rowinfo.ReportMark
+                            ReportMark = rowinfo != null ? rowinfo.ReportMark : string.Empty,
+                         
                         }) ;
                     }