diff --git a/openerp/api.py b/openerp/api.py
index 7c5e013308b..d01f73ba062 100644
--- a/openerp/api.py
+++ b/openerp/api.py
@@ -638,7 +638,7 @@ def guess(method):
                         return cr_uid_ids_context(method)
                     else:
                         return cr_uid_ids(method)
-                elif names[3] == 'id':
+                elif names[3] == 'id' or names[3] == 'res_id':
                     if 'context' in names or kwname:
                         return cr_uid_id_context(method)
                     else: