diff --git a/packages/core/src/highlevel/types/conversation.ts b/packages/core/src/highlevel/types/conversation.ts
index 0dd89ccc..e1e7e1e6 100644
--- a/packages/core/src/highlevel/types/conversation.ts
+++ b/packages/core/src/highlevel/types/conversation.ts
@@ -171,7 +171,8 @@ export class Conversation {
         this._chatId = getMarkedPeerId(this._inputPeer)
 
         const [dialog] = await getPeerDialogs(this.client, this._inputPeer)
-        const lastMessage = dialog.lastMessage
+
+        const lastMessage = dialog?.lastMessage
 
         if (lastMessage) {
             this._lastMessage = this._lastReceivedMessage = lastMessage.id