diff --git a/chapter10/kernel.xml b/chapter10/kernel.xml
index a169aa63c..5e2341e0e 100644
--- a/chapter10/kernel.xml
+++ b/chapter10/kernel.xml
@@ -211,8 +211,9 @@ File systems  --->
     scratch.</para>
 
     <note revision="systemd">
-      <para revision="systemd">Ensure that CONFIG_DEFAULT_HOSTNAME is set to 'none' or a hostname.
-      If it is left blank, your system will not start.</para>
+      <para revision="systemd">Ensure that CONFIG_DEFAULT_HOSTNAME is set to '(none)' or a hostname.
+      If it is left blank, systemd will fail to set the hostname to the
+      content of <filename>/etc/hostname</filename>.</para>
     </note>
 
     <para>Compile the kernel image and modules:</para>