diff --git a/lib/initialize.js b/lib/initialize.js
index fb3d045..21e4bca 100644
--- a/lib/initialize.js
+++ b/lib/initialize.js
@@ -135,7 +135,7 @@ module.exports = function ToInitialize(app) {
         if (app.config.sockets.allowUpgrades) {
           opts.allowUpgrades = app.config.sockets.allowUpgrades;
         }
-        if (app.config.sockets.cookie) {
+        if (typeof app.config.sockets.cookie !== 'undefined') {
           opts.cookie = app.config.sockets.cookie;
         }
         if (app.config.sockets.onlyAllowOrigins) {