diff --git a/book/intro/preface.tex b/book/intro/preface.tex
index 81d40ad..44d7a6a 100644
--- a/book/intro/preface.tex
+++ b/book/intro/preface.tex
@@ -50,7 +50,7 @@ in supermarket bread.
 
 At home, I decided to research the proper way to make bread, and much to my surprise,
 I learned that the recipes for making pizza and bread were actually quite similar, yet
-there were also diffferences. For example, some recipes would call for fresh yeast, while
+there were also differences. For example, some recipes would call for fresh yeast, while
 others would call for dry. Deep diving into various online forums and all their many
 discussions, I became even more confused.
 
@@ -183,4 +183,4 @@ making, and it is my sincere wish that this work provides you with the solid too
 I'd had access to when starting my own journey with bread.
 
 Thank you.
-Hendrik
\ No newline at end of file
+Hendrik