From 59a663c937873e44c4c1ba3ba4078eb71a272e04 Mon Sep 17 00:00:00 2001
From: Dominik George <dominik.george@teckids.org>
Date: Sat, 14 Sep 2019 17:37:31 +0200
Subject: [PATCH] Fix syntax.

---
 biscuit/apps/chronos/views.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/biscuit/apps/chronos/views.py b/biscuit/apps/chronos/views.py
index 7d35a421..0a41fcc1 100644
--- a/biscuit/apps/chronos/views.py
+++ b/biscuit/apps/chronos/views.py
@@ -130,8 +130,8 @@ def lessons_day(request: HttpRequest, when: Optional[str] = None) -> HttpRespons
     context['current_head'] = _('Lessons')
     context['lessons_table'] = lessons_table
     context['day'] = day
-    context['url_prev'] = reverse('lessons_day_by_date', day + timedalta(days=-1)
-    context['url_next'] = reverse('lessons_day_by_data', day + timedalta(days=+1)
+    context['url_prev'] = reverse('lessons_day_by_date', day + timedalta(days=-1))
+    context['url_next'] = reverse('lessons_day_by_data', day + timedalta(days=1))
     context['week'] = week
     context['lesson_periods'] = lesson_periods
 
-- 
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