diff --git a/ch02_overview.adoc b/ch02_overview.adoc
index 913dbb48..1a12ada1 100644
--- a/ch02_overview.adoc
+++ b/ch02_overview.adoc
@@ -61,7 +61,7 @@ you've received, spent, and currently own.
 ====
 
 [[spending_bitcoin]]
-==== Buying from an Online Store
+=== Buying from an Online Store
 
 Alice, introduced in the previous chapter, is a new user who has just
 acquired her first bitcoins. In <<getting_first_bitcoin>>, Alice met with