diff --git a/tests/BotSharp.Plugin.PizzaBot/Hooks/PizzaBotConversationHook.cs b/tests/BotSharp.Plugin.PizzaBot/Hooks/PizzaBotConversationHook.cs
index 3ebd4df3b..c0bce89eb 100644
--- a/tests/BotSharp.Plugin.PizzaBot/Hooks/PizzaBotConversationHook.cs
+++ b/tests/BotSharp.Plugin.PizzaBot/Hooks/PizzaBotConversationHook.cs
@@ -18,6 +18,8 @@ public PizzaBotConversationHook(IServiceProvider services,
         _states = states;
     }
 
+    public override string SelfId => string.Empty;
+
     public override async Task OnPostbackMessageReceived(RoleDialogModel message, PostbackMessageModel replyMsg)
     {
         if (replyMsg.FunctionName == "get_pizza_types")