diff --git a/odoo/service/db.py b/odoo/service/db.py
index 13ba7b7e735..df641cb2c50 100644
--- a/odoo/service/db.py
+++ b/odoo/service/db.py
@@ -10,6 +10,7 @@ import traceback
 from xml.etree import ElementTree as ET
 import zipfile
 
+from pytz import country_timezones
 from functools import wraps
 from contextlib import closing
 from decorator import decorator
@@ -71,6 +72,9 @@ def _initialize_db(id, db_name, demo, lang, user_password, login='admin', countr
             if country_code:
                 country = env['res.country'].search([('code', 'ilike', country_code)])[0]
                 env['res.company'].browse(1).write({'country_id': country_code and country.id, 'currency_id': country_code and country.currency_id.id})
+                if len(country_timezones.get(country_code, [])) == 1:
+                    users = env['res.users'].search([])
+                    users.write({'tz': country_timezones[country_code][0]})
             if phone:
                 env['res.company'].browse(1).write({'phone': phone})
             if '@' in login: