diff --git a/chapter08/kernel.xml b/chapter08/kernel.xml
index 1c9bbaf0b..974352511 100644
--- a/chapter08/kernel.xml
+++ b/chapter08/kernel.xml
@@ -218,7 +218,7 @@ It detects and initializes all components of the computer's hardware,
 then makes these components available as a tree of files to the
 software and turns a single CPU into a multitasking machine capable
 of running scores of programs seemingly at the same time</para>
-<indexterm zone="ch-bootable-kernel lfskernel"><primary sortas="b-lfskernel">lfskernel</primary></indexterm>
+<indexterm zone="ch-bootable-kernel lfskernel"><primary sortas="b-lfskernel">lfskernel-&linux-version;</primary></indexterm>
 </listitem>
 </varlistentry>