diff --git a/pelicanconf.py b/pelicanconf.py
index f49e38d..8631354 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -12,7 +12,7 @@ USE_FOLDER_AS_CATEGORY = True
 
 FEED_DOMAIN = SITEURL
 FEED_ALL_RSS = "feeds/all.rss.xml"
-TRANSLATION_FEED_RSS = "feeds/all-%s.rss.xml"
+TRANSLATION_FEED_RSS = "feeds/all-{lang}.rss.xml"
 RSS_FEED_SUMMARY_ONLY = False
 FEED_ALL_ATOM = None
 CATEGORY_FEED_ATOM = None