diff --git a/config/_default/hugo.toml b/config/_default/hugo.toml
index 8acd017..6d98083 100644
--- a/config/_default/hugo.toml
+++ b/config/_default/hugo.toml
@@ -69,7 +69,7 @@ enableEmoji = true
 [permalinks]
   [permalinks.page]
     posts = "/:year/:month/:filename"
-    series = "/:year/:month/:filename"
+    series = "/:slug/"
   [permalinks.section]
     posts = "/"
     series = "/series"