diff --git a/server/handlers/functions.js b/server/handlers/functions.js
index 72ba3c3f..6b6e5890 100644
--- a/server/handlers/functions.js
+++ b/server/handlers/functions.js
@@ -62,6 +62,7 @@ function getSession(socket) {
         var cookie = require("cookie");
         var parsedCookies = cookie.parse(socket.handshake.headers.cookie);
         return parsedCookies["_uI"];*/
+        if(socket.cookie_id == undefined) throw "Undefined error");
         return socket.cookie_id;
     } catch(e) {
         return "empty";