diff --git a/etiquette/constants.py b/etiquette/constants.py
index ef8acb2..a470856 100644
--- a/etiquette/constants.py
+++ b/etiquette/constants.py
@@ -135,6 +135,7 @@ ADDITIONAL_MIMETYPES = {
     'mkv': 'video/x-matroska',
 
     'ass': 'text/plain',
+    'nfo': 'text/plain',
     'srt': 'text/plain',
 }