diff --git a/book/intro.tex b/book/intro.tex
index 3a3ab7b..b204cbc 100644
--- a/book/intro.tex
+++ b/book/intro.tex
@@ -18,7 +18,7 @@ \chapter{About this Book} \label{sec:intro}
 
 \section{How to Use this Book}
 
-This book is designed to be read linearly, since it's goal is not to be a generic reference.
+This book is designed to be read linearly, since its goal is not to be a generic reference.
 That said, once you get through chapter 5, you can pretty much jump anywhere.
 When I teach a one-semester undergraduate course, I typically cover the chapter 1-13, sometimes skipping 7 or 9 or 10 or 12 depending on time and interest.
 For a graduate course for students with no prior machine learning background, I would very quickly blaze through 1-4, then cover the rest, augmented with some additional reading.