diff --git a/BUILD.md b/BUILD.md
index 6665ec5..15dd3d4 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -5,7 +5,7 @@ In this repostitory, you will find the chapters written in
 pretty readable, but you may well want to convert the source files into other
 formats. There is a Makefile that you can use to do that, but you will need
 various other tools installed. This file explains which tools are required,
-what they are required for and how o get them.
+what they are required for and how to get them.
 
 ## Make