diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index 2d7ae0ddb..16bfa1015 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -46,7 +46,7 @@
2019-02-19
- [bdubbs] - Add an optional modification to theh build
+ [bdubbs] - Add an optional modification to the build
procedure for ninja to allow use the the environment
variable NINJAJOBS.