diff --git a/pages/rss.go b/pages/rss.go
index 975b568..a19b3ff 100644
--- a/pages/rss.go
+++ b/pages/rss.go
@@ -114,7 +114,7 @@ func handleFeed(w http.ResponseWriter, r *http.Request, instance string, feed *f
 		feed.Items = append(feed.Items, item)
 	}
 
-	w.Header().Set("Content-Type", mime.TypeByExtension("."+r.PathValue("type")))
+	w.Header().Set("Content-Type", mime.TypeByExtension(r.PathValue("type")))
 	switch r.PathValue("type") {
 	case ".atom":
 		body, err := feed.ToAtom()