diff --git a/APT.MicroApi/APT.PF.WebApi/Controllers/Api/PFAnnourcementController.cs b/APT.MicroApi/APT.PF.WebApi/Controllers/Api/PFAnnourcementController.cs
index 81c5eaa..2bf31c0 100644
--- a/APT.MicroApi/APT.PF.WebApi/Controllers/Api/PFAnnourcementController.cs
+++ b/APT.MicroApi/APT.PF.WebApi/Controllers/Api/PFAnnourcementController.cs
@@ -64,9 +64,12 @@ namespace APT.PF.WebApiControllers.Api.PF
                 {
                     entity.END = entity.END.Value.Date.AddDays(1).AddSeconds(-1);
                 }
-                foreach (var item in Nav_Orgs)
+                if (Nav_Orgs != null && Nav_Orgs.Any())
                 {
-                    item.Nav_OrgSub = null;
+                    foreach (var item in Nav_Orgs)
+                    {
+                        item.Nav_OrgSub = null;
+                    }
                 }
                 this.UnifiedCommit(() =>
                 {