diff --git a/chapter09/usage.xml b/chapter09/usage.xml
index 2e9843988..b14f3635c 100644
--- a/chapter09/usage.xml
+++ b/chapter09/usage.xml
@@ -146,7 +146,7 @@ EOF
an S, and all of them have two numbers following the
initial letter. The K means to stop (kill) a service and the S means to start a
service. The numbers determine the order in which the scripts are run, from 00
- to 99—the smaller the number, the sooner tht script runs. When
+ to 99—the smaller the number, the sooner the script runs. When
init switches to another run level, the appropriate services
are either started or stopped, depending on the run level chosen.