diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
index 8910fd89c..2daf6f3ca 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
@@ -1093,10 +1093,10 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
         /// <summary>
         /// MeasureData
         /// </summary>
-        public string MeasureData { get; set; }
+        public string MeasureData { get; set; } = string.Empty;
 
 
-        public string OtherMeasureData { get; set; }
+        public string OtherMeasureData { get; set; } = string.Empty;
         public int ShowOrder { get; set; }
 
 
@@ -1119,9 +1119,9 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
         /// </summary>
         public Guid? OtherStudyId { get; set; }
 
-        public string OtherMarkTool { get; set; }
+        public string OtherMarkTool { get; set; } = string.Empty;
 
-        public string OtherPicturePath { get; set; }
+        public string OtherPicturePath { get; set; } = string.Empty;
 
         public int? OtherNumberOfFrames { get; set; }