diff --git a/Api/Ewide.Core/Service/Org/SysOrgService.cs b/Api/Ewide.Core/Service/Org/SysOrgService.cs
index 3f02002..a6b6269 100644
--- a/Api/Ewide.Core/Service/Org/SysOrgService.cs
+++ b/Api/Ewide.Core/Service/Org/SysOrgService.cs
@@ -210,7 +210,7 @@ namespace Ewide.Core.Service
         [UnitOfWork]
         public async Task UpdateOrg(UpdateOrgInput input)
         {
-            if (input.Pid != "0" && !string.IsNullOrEmpty(input.Pid))
+            if (!input.Pid.Equals(System.Guid.Empty.ToString()) && !string.IsNullOrEmpty(input.Pid))
             {
                 var org = await _sysOrgRep.DetachedEntities.FirstOrDefaultAsync(u => u.Id == input.Pid);
                 _ = org ?? throw Oops.Oh(ErrorCode.D2000);