diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
index 14b93c989..d8ab9400e 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
@@ -1345,6 +1345,7 @@ namespace IRaCIS.Core.Application.Service
                                 return info;
                             }))
                            .SelectMany(g => g).ToList();
+                tableQuestionMarkList = tableQuestionMarkList.Where(x => x.QuestionId != null).ToList();
 
             }