diff --git a/chapter06/gcc.xml b/chapter06/gcc.xml
index 83c9560bd..d08fd45d1 100644
--- a/chapter06/gcc.xml
+++ b/chapter06/gcc.xml
@@ -155,7 +155,7 @@ su nobody -s /bin/bash -c "PATH=$PATH make -k check"</userinput></screen>
     <para>Install the package and remove an unneeded directory:</para>
 
 <screen><userinput remap="install">make install
-rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/9.1.0/include-fixed/bits/</userinput></screen>
+rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
 
     <para>The GCC build directory is owned by <systemitem class="username">
     nobody</systemitem> now and the ownership of the installed header