diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/UserTrialViewModel.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/UserTrialViewModel.cs
index fcad91614..23fee79b0 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/UserTrialViewModel.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/UserTrialViewModel.cs
@@ -94,6 +94,15 @@ namespace IRaCIS.Application.Contracts
         public Guid UserId { get; set; }
     }
 
+    public class TrialIdentityUserBasicInfo
+    {
+        public Guid IdentityUserId { get; set; }
+
+        public string UserName { get; set; }
+
+        public string FullName { get; set; }
+    }
+
     public class TrialMaintenanceDTO : UserTrialCommand
     {
 
diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialMaintenanceService.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialMaintenanceService.cs
index 24db29490..f5b2befd9 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialMaintenanceService.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialMaintenanceService.cs
@@ -21,10 +21,10 @@ namespace IRaCIS.Core.Application.Service
     {
 
         [HttpGet]
-        public async Task<List<TrialUserBasicInfo>> GetTrialUserList(Guid trialId)
+        public async Task<List<TrialIdentityUserBasicInfo>> GetTrialUserList(Guid trialId)
         {
-            return await _trialUseRoleRepository.Where(t => t.TrialId == trialId, ignoreQueryFilters: true)
-                  .Select(t => new TrialUserBasicInfo() { FullName = t.UserRole.FullName, UserId = t.UserId, UserTypeId = t.UserRole.UserTypeId, UserName = t.UserRole.IdentityUser.UserName })
+            return await _trialIdentityUserRepository.Where(t => t.TrialId == trialId, ignoreQueryFilters: true)
+                  .Select(t => new TrialIdentityUserBasicInfo() { FullName = t.IdentityUser.FullName, IdentityUserId = t.IdentityUserId, UserName = t.IdentityUser.UserName })
                   .ToListAsync();
         }