diff --git a/_toc.yml b/_toc.yml
index 66a6765..fcedb1a 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -9,8 +9,8 @@ chapters:
     - file: getting-started
       title: Getting started
       sections:
-          - file: lessons/0/notes
+          - file: lessons/0/index
             title: "Lesson 0: Exploring qsv help messages and syntax"
-          - file: lessons/1/notes
+          - file: lessons/1/index
             title: "Lesson 1: Displaying file content with qsv table"
     - file: appendix
diff --git a/lessons/0/notes.md b/lessons/0/index.md
similarity index 100%
rename from lessons/0/notes.md
rename to lessons/0/index.md
diff --git a/lessons/1/notes.md b/lessons/1/index.md
similarity index 100%
rename from lessons/1/notes.md
rename to lessons/1/index.md