diff --git a/Controllers/ExamReportController.cs b/Controllers/ExamReportController.cs
index 8c69929..e4734b9 100644
--- a/Controllers/ExamReportController.cs
+++ b/Controllers/ExamReportController.cs
@@ -475,7 +475,7 @@ namespace BMA.EHR.Report.Service.Controllers
 										SumB = p.PointB,
 										FullC = p.PointTotalC,
 										SumC = p.PointC,
-										SumScore = p.PointB + p.PointC,
+										SumScore = Convert.ToInt32(p.PointB ?? "0") + Convert.ToInt32(p.PointC ?? "0"),
 										ExamResult = p.Pass
 
 									})