diff --git a/chapter06/util-linux-ng.xml b/chapter06/util-linux-ng.xml
index ec08257a1..9ba39f570 100644
--- a/chapter06/util-linux-ng.xml
+++ b/chapter06/util-linux-ng.xml
@@ -161,7 +161,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
         <listitem>
           <para>A command line utility to locate and print block device
           attributes</para>
-          <indexterm zone="ch-system-e2fsprogs blkid">
+          <indexterm zone="ch-system-util-linux-ng blkid">
             <primary sortas="b-blkid">blkid</primary>
           </indexterm>
         </listitem>
@@ -337,7 +337,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
         <listitem>
           <para>Finds a file system by label or Universally Unique Identifier
           (UUID)</para>
-          <indexterm zone="ch-system-e2fsprogs findfs">
+          <indexterm zone="ch-system-util-linux-ng findfs">
             <primary sortas="b-findfs">findfs</primary>
           </indexterm>
         </listitem>
@@ -358,7 +358,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
         <term><command>fsck</command></term>
         <listitem>
           <para>Is used to check, and optionally repair, file systems</para>
-          <indexterm zone="ch-system-e2fsprogs fsck">
+          <indexterm zone="ch-system-util-linux-ng fsck">
             <primary sortas="b-fsck">fsck</primary>
           </indexterm>
         </listitem>
@@ -887,7 +887,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
         <listitem>
           <para>A daemon used by the UUID library to generate time-based
           UUIDs in a secure and guranteed-unique fashion.</para>
-          <indexterm zone="ch-system-e2fsprogs uuidd">
+          <indexterm zone="ch-system-util-linux-ng uuidd">
             <primary sortas="b-uuidd">uuidd</primary>
           </indexterm>
         </listitem>
@@ -899,7 +899,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
           <para>Creates new UUIDs. Each new UUID can reasonably be considered
           unique among all UUIDs created, on the local system and on other
           systems, in the past and in the future</para>
-          <indexterm zone="ch-system-e2fsprogs uuidgen">
+          <indexterm zone="ch-system-util-linux-ng uuidgen">
             <primary sortas="b-uuidgen">uuidgen</primary>
           </indexterm>
         </listitem>
@@ -943,7 +943,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
         <listitem>
           <para>Contains routines for device identification and token
           extraction</para>
-          <indexterm zone="ch-system-e2fsprogs libblkid">
+          <indexterm zone="ch-system-util-linux-ng libblkid">
             <primary sortas="c-libblkid">libblkid</primary>
           </indexterm>
         </listitem>
@@ -954,7 +954,7 @@ mkdir -pv /var/lib/hwclock</userinput></screen>
         <listitem>
           <para>Contains routines for generating unique identifiers for objects
           that may be accessible beyond the local system</para>
-          <indexterm zone="ch-system-e2fsprogs libuuid">
+          <indexterm zone="ch-system-util-linux-ng libuuid">
             <primary sortas="c-libuuid">libuuid</primary>
           </indexterm>
         </listitem>