diff --git a/chatBot/includes/Client.js b/chatBot/includes/Client.js
index e1133e4..f223271 100644
--- a/chatBot/includes/Client.js
+++ b/chatBot/includes/Client.js
@@ -88,7 +88,7 @@ class Client extends EventEmitter {
 
   sendMessage(message) {
     console.log(message);
-    console.log(Message.isPrototypeOf(message));
+    console.log(Object.prototype.isPrototypeOf.call(Message.prototype, message.prototype));
 
     console.log('Bot name:', this.botName);
     const data = message.toJsonString();