diff --git a/addons/google_calendar/google_calendar.py b/addons/google_calendar/google_calendar.py
index 75c636aa99b..83aa9e583ea 100644
--- a/addons/google_calendar/google_calendar.py
+++ b/addons/google_calendar/google_calendar.py
@@ -987,12 +987,12 @@ class res_users(osv.Model):
     _inherit = 'res.users'
 
     _columns = {
-        'google_calendar_rtoken': fields.char('Refresh Token'),
-        'google_calendar_token': fields.char('User token'),
-        'google_calendar_token_validity': fields.datetime('Token Validity'),
-        'google_calendar_last_sync_date': fields.datetime('Last synchro date'),
+        'google_calendar_rtoken': fields.char('Refresh Token', copy=False),
+        'google_calendar_token': fields.char('User token', copy=False),
+        'google_calendar_token_validity': fields.datetime('Token Validity', copy=False),
+        'google_calendar_last_sync_date': fields.datetime('Last synchro date', copy=False),
         'google_calendar_cal_id': fields.char('Calendar ID', help='Last Calendar ID who has been synchronized. If it is changed, we remove \
-all links between GoogleID and Odoo Google Internal ID')
+all links between GoogleID and Odoo Google Internal ID', copy=False)
     }