diff --git a/ch01.asciidoc b/ch01.asciidoc
index fdf52f12..e19bde8f 100644
--- a/ch01.asciidoc
+++ b/ch01.asciidoc
@@ -8,7 +8,7 @@
 
 [TIP]
 ====
-Notice how the unit of currency is called "bitcoin" with a small _b_,
+In this book, the unit of currency is called "bitcoin" with a small _b_,
 and the system is called "Bitcoin", with a capital _B_.
 ====