diff --git a/src/schemas/json/hugo.json b/src/schemas/json/hugo.json
index 4a593c5f86e..5ff611330d9 100644
--- a/src/schemas/json/hugo.json
+++ b/src/schemas/json/hugo.json
@@ -670,7 +670,7 @@
           "section",
           "taxonomy",
           "term",
-          "RSS",
+          "rss",
           "sitemap",
           "robotsTXT",
           "404"