diff --git a/seminar/models.py b/seminar/models.py
index 310ce573..4a249154 100644
--- a/seminar/models.py
+++ b/seminar/models.py
@@ -988,7 +988,7 @@ def aux_generate_filename(self, filename):
 		unidecode(filename.replace('/', '-').replace('\0', ''))
 	)
 	datedir = timezone.now().strftime('%Y-%m')
-	fname = "{}_{}".format(
+	fname = "{}/{}".format(
 		timezone.now().strftime('%Y-%m-%d-%H:%M'),
 		clean)
 	return os.path.join(datedir, fname)