diff --git a/doc/src/build/programming-with-objects/ch3-immutable-objects.md b/doc/src/build/programming-with-objects/ch3-immutable-objects.md
index a7bf8386883a7..c2fb5a3844811 100644
--- a/doc/src/build/programming-with-objects/ch3-immutable-objects.md
+++ b/doc/src/build/programming-with-objects/ch3-immutable-objects.md
@@ -1,5 +1,5 @@
 ---
-title: Chapter 3: Immutable Objects
+title: Chapter 3 - Immutable Objects
 ---
 
 In chapters 1 and 2, we learned how to create and use objects owned by an account address. In this chapter, we will demonstrate how to create and use immutable objects.