diff --git a/chapter08/groff.xml b/chapter08/groff.xml
index 4ab954d13..ba80b31c2 100644
--- a/chapter08/groff.xml
+++ b/chapter08/groff.xml
@@ -41,6 +41,10 @@
   <sect2 role="installation">
     <title>Installation of Groff</title>
 
+    &update-config-text;
+
+<screen><userinput remap="pre">tar -C build-aux &update-config-arg;</userinput></screen>
+
     <para>Groff expects the environment variable <envar>PAGE</envar> to
     contain the default paper size. For users in the United States,
     <parameter>PAGE=letter</parameter> is appropriate. Elsewhere,