diff --git a/conf/nginx.conf b/conf/nginx.conf
index 9aeb854..30bfdb0 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,5 +1,5 @@
 set $main_domain "__DOMAIN__";
-set $sandbox_domain "sandbox-__DOMAIN__";
+set $sandbox_domain "__SANDBOXDOMAIN__";
 set $allowed_origins "https://${sandbox_domain}";
 set $api_domain "__DOMAIN__";
 set $files_domain "__DOMAIN__";