diff --git a/sso/services/__init__.py b/sso/services/__init__.py
index cabf784..bad0c6b 100644
--- a/sso/services/__init__.py
+++ b/sso/services/__init__.py
@@ -32,7 +32,7 @@ class BaseService():
 
     def add_user(self, username, password):
         """ Add a user, returns a UID for that user """
-        pass
+        return username
 
     def check_user(self, username):
         """ Check if the username exists """