diff --git a/src/constants.js b/src/constants.js
index 9347302d1..e3f4936dc 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -18,6 +18,8 @@ exports = module.exports = {
 
     DEFAULT_TOKEN_EXPIRATION: 7 * 24 * 60 * 60 * 1000, // 1 week
 
-    DEFAULT_MEMORY_LIMIT: (256 * 1024 * 1024) // see also client.js
+    DEFAULT_MEMORY_LIMIT: (256 * 1024 * 1024), // see also client.js
+
+    DEMO_USER_ID: 'cloudron'
 };