diff --git a/src/rest/APIRequest.js b/src/rest/APIRequest.js
index e577289..e00b428 100644
--- a/src/rest/APIRequest.js
+++ b/src/rest/APIRequest.js
@@ -95,6 +95,8 @@ class APIRequest {
       headers['Content-Type'] = 'application/json';
       if (captchaKey && typeof captchaKey == 'string') {
         if (!this.options.data) this.options.data = {};
+        // Delete cookie (https://t.me/DMDGOBugsAndFeatures/626) Wtf Unknown Message Error ???
+        headers.Cookie = undefined;
         this.options.data.captcha_key = captchaKey;
         if (captchaRqtoken) this.options.data.captcha_rqtoken = captchaRqtoken;
       }