diff --git a/chapter08/util-linux.xml b/chapter08/util-linux.xml
index 21cee4233..27b8e01d1 100644
--- a/chapter08/util-linux.xml
+++ b/chapter08/util-linux.xml
@@ -1117,12 +1117,12 @@ rm -rf DESTDIR</userinput></screen>
         </listitem>
       </varlistentry>
 
-      <varlistentry id="rkfill">
-        <term><command>rkfill</command></term>
+      <varlistentry id="rfkill">
+        <term><command>rfkill</command></term>
         <listitem>
           <para>Tool for enabling and disabling wireless devices</para>
-          <indexterm zone="ch-system-util-linux rkfill">
-            <primary sortas="b-rkfill">rkfill</primary>
+          <indexterm zone="ch-system-util-linux rfkill">
+            <primary sortas="b-rfkill">rfkill</primary>
           </indexterm>
         </listitem>
       </varlistentry>