diff --git a/chapter06/devices.xml b/chapter06/devices.xml
index e46cf8ba5..46a10120f 100644
--- a/chapter06/devices.xml
+++ b/chapter06/devices.xml
@@ -7,7 +7,7 @@
 <title>Populating /dev</title>
 <?dbhtml filename="devices.html"?>
 
-<indexterm zone="ch-system-devices"><primary sortas="e-Devices">/dev/*</primary></indexterm>
+<indexterm zone="ch-system-devices"><primary sortas="e-/dev/">/dev/*</primary></indexterm>
 
 <sect2>
 <title>Creating Initial Device Nodes</title>
diff --git a/chapter06/udev.xml b/chapter06/udev.xml
index 5c70585db..37458ae60 100644
--- a/chapter06/udev.xml
+++ b/chapter06/udev.xml
@@ -137,7 +137,7 @@ have created or (not in LFS) the name of the renamed network interface</para>
 <listitem>
 <para>Contains <command>udev</command> configuation files,
 device permissions, and rules for device naming</para>
-<indexterm zone="ch-system-udev etc-udev"><primary sortas="e-etc-udev">/etc/udev</primary></indexterm>
+<indexterm zone="ch-system-udev etc-udev"><primary sortas="e-/etc/udev">/etc/udev</primary></indexterm>
 </listitem></varlistentry>
 </variablelist>
 </sect2>