diff --git a/recipes/scientific_american.recipe b/recipes/scientific_american.recipe
index ab7488e9e9..bf13b4b945 100644
--- a/recipes/scientific_american.recipe
+++ b/recipes/scientific_american.recipe
@@ -3,7 +3,6 @@ __license__ = "GPL v3"
 
 import json
 from datetime import datetime
-from os.path import splitext
 from urllib.parse import urljoin
 
 from calibre.web.feeds.news import BasicNewsRecipe, prefixed_classes