diff --git a/src/WSServer.ts b/src/WSServer.ts
index ec0c2b4..fe91f82 100644
--- a/src/WSServer.ts
+++ b/src/WSServer.ts
@@ -471,7 +471,7 @@ export default class WSServer {
     }
 
     getAdduserMsg() : string {
-        var arr : string[] = ["adduser", this.clients.length.toString()];
+        var arr : string[] = ["adduser", this.clients.filter(c=>c.username).length.toString()];
         //@ts-ignore
         this.clients.filter(c=>c.username).forEach((c) => arr.push(c.username, c.rank));
         return guacutils.encode(...arr);