diff --git a/en_US.ISO8859-1/books/handbook/disks/chapter.sgml b/en_US.ISO8859-1/books/handbook/disks/chapter.sgml
index 479868889c..91d0438542 100644
--- a/en_US.ISO8859-1/books/handbook/disks/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/disks/chapter.sgml
@@ -4210,7 +4210,7 @@ geli_da2_flags="-p -k /root/da2.key"</screen>
 	<filename>/etc/rc.conf</filename>.  The following line tells the
 	<filename>encswap</filename> rc.d script to create &man.geli.8; swap
 	partitions using the Blowfish algorithm with a key length of 128 bit,
-	a sectorsize of 4096 kilobyte and the <quote>detach on last close</quote>
+	a sectorsize of 4 kilobytes and the <quote>detach on last close</quote>
 	option set:</para>
 
       <programlisting>geli_swap_flags="-a blowfish -l 128 -s 4096 -d"</programlisting>