diff --git a/lib/galaxy/webapps/galaxy/api/user_preferences.py b/lib/galaxy/webapps/galaxy/api/user_preferences.py
index cf643010ba9..294dcc7cf62 100644
--- a/lib/galaxy/webapps/galaxy/api/user_preferences.py
+++ b/lib/galaxy/webapps/galaxy/api/user_preferences.py
@@ -264,7 +264,7 @@ class UserPrefAPIController(BaseAPIController, BaseUIController, UsesTagsMixin,
             user_info_dict[attribute] = value
         return user_info_dict
 
-    def __add_address(self, trans, user_id, params):
+    def _add_address(self, trans, user_id, params):
         """ Add new address """
         is_admin = trans.user_is_admin()
         if is_admin: