diff --git a/doc/guide/bind10-guide.xml b/doc/guide/bind10-guide.xml
index fb7965b224..336b9cd9eb 100644
--- a/doc/guide/bind10-guide.xml
+++ b/doc/guide/bind10-guide.xml
@@ -61,14 +61,14 @@
 
 <!-- TODO: acknowledge all sponsors and CNNIC and CZNIC too -->
 
-      <para>BIND 10 is a sponsored development project, and would not 
+      <para>BIND 10 is a sponsored development project, and would not
       be possible without the generous support of the sponsors.</para>
 
-      <para><ulink url="http://jprs.co.jp/">JPRS</ulink> and 
-      <ulink url="http://cira.ca/">CIRA</ulink> are Patron Level 
+      <para><ulink url="http://jprs.co.jp/">JPRS</ulink> and
+      <ulink url="http://cira.ca/">CIRA</ulink> are Patron Level
       sponsors.</para>
 
-      <para><ulink url="https://www.afnic.fr/">AFNIC</ulink>, 
+      <para><ulink url="https://www.afnic.fr/">AFNIC</ulink>,
       <ulink url="https://www.cnnic.net.cn/">CNNIC</ulink>,
       <ulink url="https://www.nic.cz/">CZ.NIC</ulink>,
       <ulink url="http://www.denic.de/">DENIC eG</ulink>,
@@ -79,16 +79,16 @@
       <ulink url="https://www.tcinet.ru/">Technical Center of Internet</ulink>
       are current sponsors.</para>
 
-      <para><ulink url="https://www.afilias.info/">Afilias</ulink>, 
+      <para><ulink url="https://www.afilias.info/">Afilias</ulink>,
       <ulink url="https://www.iis.se/">IIS.SE</ulink>,
       <ulink url="http://www.nominet.org.uk/">Nominet</ulink>, and
-      <ulink url="https://www.sidn.nl/">SIDN</ulink> were founding 
+      <ulink url="https://www.sidn.nl/">SIDN</ulink> were founding
       sponsors of the project.</para>
 
 <!-- DHCP sponsorship by Comcast -->
 
-      <para>Support for BIND 10 development of the DHCPv4 and DHCPv6 
-      components is provided by 
+      <para>Support for BIND 10 development of the DHCPv4 and DHCPv6
+      components is provided by
       <ulink url="http://www.comcast.com/">Comcast</ulink>.</para>
 
     </section>