diff --git a/src/calibre/web/feeds/news.py b/src/calibre/web/feeds/news.py
index 7d17bcedb4..73e003f9f4 100644
--- a/src/calibre/web/feeds/news.py
+++ b/src/calibre/web/feeds/news.py
@@ -157,7 +157,7 @@ class BasicNewsRecipe(Recipe):
     #:
     auto_cleanup_keep = None
 
-    #: Specify any extra :term:`CSS` that should be added to downloaded :term:`HTML` files
+    #: Specify any extra :term:`CSS` that should be added to downloaded :term:`HTML` files.
     #: It will be inserted into `<style>` tags, just before the closing
     #: `</head>` tag thereby overriding all :term:`CSS` except that which is
     #: declared using the style attribute on individual :term:`HTML` tags.