diff --git a/src/calibre/web/feeds/news.py b/src/calibre/web/feeds/news.py
index 3277d957e0..dcdfc8a122 100644
--- a/src/calibre/web/feeds/news.py
+++ b/src/calibre/web/feeds/news.py
@@ -407,7 +407,7 @@ class BasicNewsRecipe(Recipe):
         :param url: The URL to be followed
         :param tag: The tag from which the URL was derived
         '''
-        raise NotImplementedError
+        raise NotImplementedError()
 
     def get_extra_css(self):
         '''