diff --git a/billard/templatetags/display_client.py b/billard/templatetags/display_client.py
index cf5c723..690164a 100644
--- a/billard/templatetags/display_client.py
+++ b/billard/templatetags/display_client.py
@@ -22,7 +22,7 @@ def display_client(client, desk_no):
         a = acc[-1]
         if a.time_to is None:
             alert = 'alert-info'
-            prize = utils.get_prize_for(start=a.time_from, end=datetime.now(), pph=desk.prize)
+            prize = utils.get_prize_for(start=a.time_from, end=datetime.now(timezone.utc), pph=desk.prize)
             prize = '{0:.2f}'.format(prize)
             if prize != a.prize:
                 a.prize = prize