diff --git a/src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs b/src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs
index 2f87bca5..45866055 100644
--- a/src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs
+++ b/src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs
@@ -89,6 +89,11 @@ public class ConversationStateService : IConversationStateService, IDisposable
 
     public void Save()
     {
+        if (_conversationId == null)
+        {
+            return;
+        }
+
         var states = new List<KeyValueModel>();
 
         foreach (var dic in _state)