diff --git a/IRaCIS.Core.Domain/Institution/Site.cs b/IRaCIS.Core.Domain/Institution/Site.cs
index 29710ebab..e30b310a1 100644
--- a/IRaCIS.Core.Domain/Institution/Site.cs
+++ b/IRaCIS.Core.Domain/Institution/Site.cs
@@ -42,7 +42,6 @@ namespace IRaCIS.Core.Domain.Models
         //µ¼º½ÊôÐÔ
         [JsonIgnore]
         public List<TrialSite> TrialSiteList { get; set; }
-        [JsonIgnore]
-        public List< TrialSiteUser> TrialSiteUserList { get; set; }
+
     }
 }