diff --git a/bin/addons/base/res/partner/partner.py b/bin/addons/base/res/partner/partner.py
index 7a0f70c1e9c..8a6a6197ab3 100644
--- a/bin/addons/base/res/partner/partner.py
+++ b/bin/addons/base/res/partner/partner.py
@@ -149,7 +149,6 @@ class res_partner(osv.osv):
         'customer': lambda *a: 1,
         'category_id': _default_category,
         'company_id': lambda s,cr,uid,c: s.pool.get('res.company')._company_default_get(cr, uid, 'res.partner', context=c),
-        'lang': lambda self, cr, uid, context: context.get('lang',False) or tools.config.get('lang', False)
     }
     def copy(self, cr, uid, id, default={}, context={}):
         name = self.read(cr, uid, [id], ['name'])[0]['name']
diff --git a/bin/addons/base/res/res_lang.py b/bin/addons/base/res/res_lang.py
index 79f9ebc7467..d2dd53eab6b 100644
--- a/bin/addons/base/res/res_lang.py
+++ b/bin/addons/base/res/res_lang.py
@@ -32,9 +32,9 @@ class lang(osv.osv):
     _description = "Languages"
 
     def install_lang(self, cr, uid, **args):
-        avil_ids = self.search(cr, uid, [('code','=', tools.config.get('lang'))])
-        if not avil_ids:
-            self.load_lang(cr, uid, tools.config.get('lang'))
+        lang_ids = self.search(cr, uid, [('code','=', tools.config.get('lang'))])
+        if not lang_ids:
+            lang_id = self.load_lang(cr, uid, tools.config.get('lang'))
         return True
 
     def load_lang(self, cr, uid, lang, lang_name=None):
@@ -73,12 +73,13 @@ class lang(osv.osv):
             'decimal_point' : fix_xa0(str(locale.localeconv()['decimal_point'])),
             'thousands_sep' : fix_xa0(str(locale.localeconv()['thousands_sep'])),
         }
-
+        lang_id = False
         try:
-            self.create(cr, uid, lang_info)
+            lang_id = self.create(cr, uid, lang_info)
+            self.pool.get('ir.values').set(cr, uid, 'default', False, 'lang', ['res.partner'], lang)
         finally:
             tools.resetlocale()
-        return True
+        return lang_id
 
     def _get_default_date_format(self,cursor,user,context={}):
         return '%m/%d/%Y'