diff --git a/lib/client.js b/lib/client.js
index c6dfcb8..73223dc 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -470,7 +470,7 @@ export default class Client extends EventTarget {
 			initialResp = { command: "AUTHENTICATE", params: [respStr] };
 			break;
 		case "EXTERNAL":
-			initialResp = { command: "AUTHENTICATE", params: [base64.encode("")] };
+			initialResp = { command: "AUTHENTICATE", params: ["+"] };
 			break;
 		case "OAUTHBEARER":
 			let raw = "n,,\x01auth=Bearer " + params.token + "\x01\x01";