diff --git a/pym/install/install.py b/pym/install/install.py
index 997e134..3ac8cd8 100644
--- a/pym/install/install.py
+++ b/pym/install/install.py
@@ -579,12 +579,15 @@ class Install(MethodsInterface):
         """
         Обновить список локальных администраторов при установке
         """
+        aliases = {
+            'update': 'system_update',
+        }
         install_admin = Admins(self.clVars, chroot=True)
         install_admin.clear()
         for k,v in self.clVars.select('install.cl_migrate_user',
                                       'install.cl_migrate_admin',
                                       install_cl_migrate_admin__ne=""):
-            install_admin[k] = v
+            install_admin[k] = aliases.get(v,v)
             install_admin.save()
         return True
 
diff --git a/pym/install/variables/system.py b/pym/install/variables/system.py
index ea676fc..6c474ab 100644
--- a/pym/install/variables/system.py
+++ b/pym/install/variables/system.py
@@ -314,6 +314,11 @@ class VariableClMigrateData(UserHelper, TableVariable):
         self.label = _("Migrating users")
 
     def set(self, value):
+        value = [
+            [x[0], {'none':''}.get(x[1],x[1]),
+            x[2],x[3]]
+            for x in value
+        ]
         if len(value) == 1:
             if len(value[0]) > 1 and value[0][0] == 'none':
                 return [[]]
@@ -359,6 +364,7 @@ class VariableClMigrateAdmin(UserHelper, Variable):
     """
     type = 'choice-list'
     default_value = ""
+    aliases = {'system_update': 'update'}
 
     def init(self):
         self.label = _("Administrator")
@@ -370,17 +376,18 @@ class VariableClMigrateAdmin(UserHelper, Variable):
             ("update", _("System update")),
         ]
 
+    def get_alias(self, value):
+        return self.aliases.get(value, value)
+
     def get(self):
         """
         Migrating users (users above 1000 uid)
         """
         admins = Admins(self.parent)
-        return [admins[x] or self.default_value
+        return [self.get_alias(admins[x]) or self.default_value
                 for x in self.Get('cl_migrate_user')]
 
     def set(self, value):
-        name_map = {'update':'system_update', 'none':''}
-        value = map(lambda x:name_map.get(x,x), value)
         return map(lambda x: x if x else self.default_value, value)