diff --git a/TODO b/TODO
index b96baed..1900f3c 100644
--- a/TODO
+++ b/TODO
@@ -12,3 +12,7 @@ other known problems:
 
 - The DatePicker works only if you are logged in, which is mostly ok for /intern
   and there is no Date to insert at the moment in forms for externs.
+
+other issues
+
+ - server error 500 in production after businesscards process. is this reproducable?
diff --git a/input/management/commands/sendmails.py b/input/management/commands/sendmails.py
index 312f3e6..51a6e34 100644
--- a/input/management/commands/sendmails.py
+++ b/input/management/commands/sendmails.py
@@ -40,7 +40,7 @@ class Command(BaseCommand):
                   mail_template.render(context),
                   IF_EMAIL,
                   [email],
-                  bcc=[SURVEY_EMAIL, benni.baermann@wikimedia.de])
+                  bcc=[SURVEY_EMAIL, 'benni.baermann@wikimedia.de'])
             survey_mail.send(fail_silently=False)
         except BadHeaderError:
             return HttpResponse('Invalid header found.')