diff --git a/chapter05/linux-headers.xml b/chapter05/linux-headers.xml
index 24415bf55..ea510b85f 100644
--- a/chapter05/linux-headers.xml
+++ b/chapter05/linux-headers.xml
@@ -56,9 +56,10 @@
     used, because it requires <application>rsync</application>, which may not
     be available. The headers are first placed in
     <filename class="directory">./usr</filename>, then copied to the needed
-    location.</para>
+    location.  Replace <replaceable>x86</replaceable> with a value suitable
+    for your target machine if it's not a 32-bit or 64-bit x86:</para>
 
-<screen><userinput remap="make">make headers
+<screen><userinput remap="make">make headers ARCH=<replaceable>x86</replaceable>
 find usr/include -name '.*' -delete
 rm usr/include/Makefile
 </userinput><userinput remap="install">cp -rv usr/include $LFS/usr</userinput></screen>
diff --git a/chapter06/kernel.xml b/chapter06/kernel.xml
index 8c7950422..190d47f66 100644
--- a/chapter06/kernel.xml
+++ b/chapter06/kernel.xml
@@ -58,7 +58,7 @@
     <para>There are several ways to configure the kernel options. Usually,
     This is done through a menu-driven interface, for example:</para>
 
-<screen role="nodump"><userinput>make ARCH=x86 CROSS_COMPILE=$LFS_TGT- menuconfig</userinput></screen>
+<screen role="nodump"><userinput>make ARCH=<replaceable>x86</replaceable> CROSS_COMPILE=$LFS_TGT- menuconfig</userinput></screen>
 
     <variablelist>
       <title>The meaning of make environment variables:</title>
@@ -66,7 +66,9 @@
       <varlistentry>
         <term><command>ARCH=x86</command></term>
         <listitem>
-          <para>Configure the kernel for running on the target machine.</para>
+          <para>Configure the kernel for running on the target machine.
+          Replace <replaceable>x86</replaceable> with a value suitable
+          for your target machine if it's not a 32-bit or 64-bit x86.</para>
         </listitem>
       </varlistentry>