diff --git a/addons/lunch/models/lunch_supplier.py b/addons/lunch/models/lunch_supplier.py
index 57e2660ef18..7eabec19d5c 100644
--- a/addons/lunch/models/lunch_supplier.py
+++ b/addons/lunch/models/lunch_supplier.py
@@ -16,17 +16,14 @@ from odoo.addons.base.models.res_partner import _tz_get
 WEEKDAY_TO_NAME = ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun']
 CRON_DEPENDS = {'name', 'active', 'send_by', 'automatic_email_time', 'moment', 'tz'}
 
-def float_to_time(hours, moment='am', tz=None):
+def float_to_time(hours, moment='am'):
     """ Convert a number of hours into a time object. """
     if hours == 12.0 and moment == 'pm':
         return time.max
     fractional, integral = math.modf(hours)
     if moment == 'pm':
         integral += 12
-    res = time(int(integral), int(float_round(60 * fractional, precision_digits=0)), 0)
-    if tz:
-        res = res.replace(tzinfo=pytz.timezone(tz))
-    return res
+    return time(int(integral), int(float_round(60 * fractional, precision_digits=0)), 0)
 
 def time_to_float(t):
     return float_round(t.hour + t.minute/60 + t.second/3600, precision_digits=2)