diff --git a/.env b/.env
index 8885bf9..c2c69d3 100644
--- a/.env
+++ b/.env
@@ -15,3 +15,5 @@ RABBITMQ_VHOST=/
 ELASTICSEARCH_HOST=elasticsearch
 
 MONITORING_URL=
+
+SECRET_COOKIE=nette
diff --git a/app/bootstrap.php b/app/bootstrap.php
index e163bd9..dfb56cb 100644
--- a/app/bootstrap.php
+++ b/app/bootstrap.php
@@ -9,7 +9,7 @@
 if (\PHP_SAPI === 'cli') {
 	Kdyby\Console\DI\BootstrapHelper::setupMode($configurator);
 } else {
-	$configurator->setDebugMode(TRUE);
+	$configurator->setDebugMode(\getenv('SECRET_COOKIE') . '@' . $_SERVER['REMOTE_ADDR']);
 }
 
 $configurator->enableDebugger(__DIR__ . '/../log');