diff --git a/docs/chapter-2.md b/docs/chapter-2.md
index e417a8a..2fd394d 100644
--- a/docs/chapter-2.md
+++ b/docs/chapter-2.md
@@ -1,7 +1,7 @@
 ---
 nav_order: 3
 ---
-# Section 1
+# Chapter 2
 {: .no_toc }
 
 ## Table of contents
diff --git a/docs/chapter-3.md b/docs/chapter-3.md
index 20a9c74..7e1ebda 100644
--- a/docs/chapter-3.md
+++ b/docs/chapter-3.md
@@ -1,7 +1,7 @@
 ---
 nav_order: 4
 ---
-# Section 2
+# Chapter 3
 {: .no_toc }
 
 ## Table of contents