diff --git a/openerp/addons/base/res/res_users.py b/openerp/addons/base/res/res_users.py
index e6e33871455..4670d93ef68 100644
--- a/openerp/addons/base/res/res_users.py
+++ b/openerp/addons/base/res/res_users.py
@@ -706,7 +706,7 @@ def parse_m2m(commands):
     for command in commands:
         if isinstance(command, (tuple, list)):
             if command[0] in (1, 4):
-                ids.append(command[2])
+                ids.append(command[1])
             elif command[0] == 5:
                 ids = []
             elif command[0] == 6: