diff --git a/src/fellchensammlung/feeds.py b/src/fellchensammlung/feeds.py
index 7293291..afc7f6c 100644
--- a/src/fellchensammlung/feeds.py
+++ b/src/fellchensammlung/feeds.py
@@ -1,5 +1,6 @@
from django.contrib.syndication.views import Feed
from django.utils.feedgenerator import Rss201rev2Feed
+from django.templatetags.static import static
from django.urls import reverse
from django.utils.xmlutils import SimplerXMLGenerator
@@ -15,7 +16,7 @@ class FormattedFeed(Rss201rev2Feed):
def write(self, outfile, encoding):
handler = SimplerXMLGenerator(outfile, encoding, short_empty_elements=True)
handler.startDocument()
- handler._write('')
+ handler._write(f'')
handler.startElement("rss", self.rss_attributes())
handler.startElement("channel", self.root_attributes())
self.add_root_elements(handler)
diff --git a/src/fellchensammlung/static/rss.xsl b/src/fellchensammlung/static/rss.xsl
index 9f99640..ef5afb9 100644
--- a/src/fellchensammlung/static/rss.xsl
+++ b/src/fellchensammlung/static/rss.xsl
@@ -12,7 +12,7 @@
-
+