diff --git a/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.sgml b/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.sgml
index 0c7da07491..a774982646 100644
--- a/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.sgml
@@ -4898,7 +4898,7 @@ nis_client_flags="-S <replaceable>NIS domain</replaceable>,<replaceable>server</
 	  <listitem>
             <para>Make sure that the <devicename>bpf</devicename>
 	      device is compiled into your kernel.  To do this, add
-	      <literal>pseudo-device bpf</literal> to your kernel
+	      <literal>device bpf</literal> (<literal>pseudo-device bpf</literal> under &os&nbsp;4.X) to your kernel
 	      configuration file, and rebuild the kernel.  For more
 	      information about building kernels, see <xref
 	      linkend="kernelconfig">.</para>