diff --git a/gensbbsrss.py b/gensbbsrss.py
index 14bb135..3cf0df8 100644
--- a/gensbbsrss.py
+++ b/gensbbsrss.py
@@ -17,10 +17,7 @@ description = ElementTree.SubElement(channel, 'description')
 description.text = 'just a showcase of software being broken :)'
 language = ElementTree.SubElement(channel, 'language')
 language.text = 'en-us'
-items = []
-for i in os.listdir('.'):
-    if i in ('index.html', 'index.xml'):
-        continue
+def parse_file(i):
     with open(i) as file:
         soup = BeautifulSoup(file.read())
     item = ElementTree.Element('item')
@@ -32,8 +29,8 @@ for i in os.listdir('.'):
     guid.text = f'sbbs/{os.path.splitext(i)[0]}'
     description = ElementTree.SubElement(item, 'description')
     description.text = str(soup.find('div', class_='content'))
-    items.append((datetime.fromisoformat(soup.find('meta', {'name': 'created'})['content']), item))
-for date, i in sorted(items, reverse=True, key=lambda i: i[0]):
+    return (datetime.fromisoformat(soup.find('meta', {'name': 'created'})['content']), item)
+for date, i in sorted(map(parse_file, filter(lambda i: i not in ('index.html', 'index.xml'), os.listdir('.'))), reverse=True, key=lambda i: i[0]):
     # http://johnbokma.com/blog/2019/10/09/rfc-822-and-rfc-3339-dates-in-python.html
     ctime = date.ctime()
     pubdate = ElementTree.SubElement(i, 'pubDate')