From 42b3f9ff51158d26b730bb7243c101a77b652e86 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Sun, 19 Jul 2015 13:29:02 +0200
Subject: [PATCH] Fixed a bug in the new template filter

---
 src/pretix/control/templatetags/order_overview.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/pretix/control/templatetags/order_overview.py b/src/pretix/control/templatetags/order_overview.py
index 163a465ee8..e3fb24f164 100644
--- a/src/pretix/control/templatetags/order_overview.py
+++ b/src/pretix/control/templatetags/order_overview.py
@@ -9,6 +9,8 @@ register = template.Library()
 
 @register.filter(name='togglesum', needs_autoescape=True)
 def cut(value, autoescape=True):
+    if not value:
+        return ''
     if autoescape:
         esc = conditional_escape
     else: