diff --git a/dav_events/tests/test_oneclickactions.py b/dav_events/tests/test_oneclickactions.py
index 86f4f41..9d91df6 100644
--- a/dav_events/tests/test_oneclickactions.py
+++ b/dav_events/tests/test_oneclickactions.py
@@ -118,7 +118,7 @@ class ActionTestCase(EmailTestMixin, RoleMixin, EventMixin, TestCase):
                            ' auf \'%(status)s\' gesetzt.') % {
                        'status': status_label,
                        # 'date': datetime.datetime.now().strftime('%d.%m.%Y %H:%M:%S'),
-                       'date': '\d{2}\.\d{2}\.\d{4} \d{2}:\d{2}:\d{2}',
+                       'date': r'\d{2}\.\d{2}\.\d{4} \d{2}:\d{2}:\d{2}',
                        'user': user.get_full_name(),
                    })
         html = message.replace('\'', ''')