diff --git a/IRaCIS.Core.Application/Service/Visit/SubjectVisitService.cs b/IRaCIS.Core.Application/Service/Visit/SubjectVisitService.cs
index 1f2645602..c5b9898bc 100644
--- a/IRaCIS.Core.Application/Service/Visit/SubjectVisitService.cs
+++ b/IRaCIS.Core.Application/Service/Visit/SubjectVisitService.cs
@@ -261,6 +261,8 @@ namespace IRaCIS.Core.Application.Services
                         IsReading=k.IsReading,
                         IsDeleted=k.IsDeleted,
                     }).ToList();
+
+                    series.InstanceCount=series.InstanceInfoList.Count;
                 }
                 );