diff --git a/pelican/plugins/sitemap/sitemap.py b/pelican/plugins/sitemap/sitemap.py
index 4ea2b0b..127abf1 100644
--- a/pelican/plugins/sitemap/sitemap.py
+++ b/pelican/plugins/sitemap/sitemap.py
@@ -152,9 +152,7 @@ def is_excluded(item):
                 content_type = (
                     "articles"
                     if isinstance(obj, contents.Article)
-                    else "pages"
-                    if isinstance(obj, contents.Page)
-                    else "indexes"
+                    else "pages" if isinstance(obj, contents.Page) else "indexes"
                 )
                 changefreq = changefreqs[content_type]
                 priority = float(priorities[content_type])