diff --git a/_chapters/12-files.md b/_chapters/12-file.md
similarity index 96%
rename from _chapters/12-files.md
rename to _chapters/12-file.md
index 82a5db4..08fe439 100644
--- a/_chapters/12-files.md
+++ b/_chapters/12-file.md
@@ -1,8 +1,8 @@
 ---
 layout: chapter
-title: File layout
+title: Laying out a CSS file
 section: Extras
-permalink: /chapters/file-layout/
+permalink: /chapters/file/
 description: What does a maintainable CSS file look like?
 ---