diff --git a/IRaCIS.Core.Application/Service/Common/MailService.cs b/IRaCIS.Core.Application/Service/Common/MailService.cs
index d645a0df..1cc0514c 100644
--- a/IRaCIS.Core.Application/Service/Common/MailService.cs
+++ b/IRaCIS.Core.Application/Service/Common/MailService.cs
@@ -576,7 +576,7 @@ namespace IRaCIS.Application.Services
                     trialInfo.ResearchProgramNo,
                     trialInfo.TrialCode,
                     sysUserInfo.UserName,
-                    sysUserInfo.UserTypeRole.UserTypeShortName,
+                    userType.UserTypeShortName,
                     sysUserInfo.IsFirstAdd ? redirectUrl : baseUrl
                     );
             }