diff --git a/config/cdrom/README.txt b/config/cdrom/README.txt
index e342bc401e..e031593649 100644
--- a/config/cdrom/README.txt
+++ b/config/cdrom/README.txt
@@ -5,7 +5,7 @@ Installation
 ------------
 
 Please read the IPFire Installation manual before installing the firewall.
-This document is located on our wiki (http://wiki.ipfire.org/en/installation/start)
+This document is located on our wiki (https://wiki.ipfire.org/en/installation/start)
 It will guide you through the installation process and will help 
 you make the necessary decisions during the installation process.
 
diff --git a/config/cfgroot/general-functions.pl b/config/cfgroot/general-functions.pl
index aefcfb6878..430ec4904d 100644
--- a/config/cfgroot/general-functions.pl
+++ b/config/cfgroot/general-functions.pl
@@ -25,7 +25,7 @@ package General;
 $General::version = 'VERSION';
 $General::swroot = 'CONFIG_ROOT';
 $General::noipprefix = 'noipg-';
-$General::adminmanualurl = 'http://wiki.ipfire.org';
+$General::adminmanualurl = 'https://wiki.ipfire.org';
 
 require "${General::swroot}/network-functions.pl";
 
diff --git a/html/cgi-bin/dns.cgi b/html/cgi-bin/dns.cgi
index e5832a5608..44d1e7102d 100644
--- a/html/cgi-bin/dns.cgi
+++ b/html/cgi-bin/dns.cgi
@@ -91,7 +91,7 @@ print <<END
 
 <table border="0"  width='100%'>
   <tr>
-    <td colspan="2"><font class='base'>$Lang::tr{'dns desc'}<br /><img src="/images/dns_link.png" border="0" align="absmiddle"/><a href="http://wiki.ipfire.org/en/dns/public-servers" target="_blank" rel="noopener">$Lang::tr{'dns list'}</a></font></td>
+    <td colspan="2"><font class='base'>$Lang::tr{'dns desc'}<br /><img src="/images/dns_link.png" border="0" align="absmiddle"/><a href="https://wiki.ipfire.org/en/dns/public-servers" target="_blank" rel="noopener">$Lang::tr{'dns list'}</a></font></td>
   </tr>
   <tr>
     <td colspan="2">&nbsp;</td>