diff --git a/htdocs/admin/system/about.php b/htdocs/admin/system/about.php
index 3b2492fad65..a558a473957 100644
--- a/htdocs/admin/system/about.php
+++ b/htdocs/admin/system/about.php
@@ -100,8 +100,8 @@ print '</ul>';
 
 print $langs->trans("Developpers").':';
 print '<ul>';
-print '<li>'.$langs->trans("SourcesRepository").': <a href="http://www.github.com/Dolibarr/dolibarr" target="_blank" rel="external">http://www.github.com/Dolibarr/dolibarr</a></li>';
-print '<li>'.$langs->trans("SeeWikiForAllTeam").': <a href="http://wiki.dolibarr.org/index.php/Dolibarr_Project" target="_blank" rel="external">http://wiki.dolibarr.org/index.php/Dolibarr_Project</a></li>';
+print '<li>'.$langs->trans("SourcesRepository").': <a href="https://www.github.com/Dolibarr/dolibarr" target="_blank" rel="external">https://www.github.com/Dolibarr/dolibarr</a></li>';
+print '<li>'.$langs->trans("SeeWikiForAllTeam").': <a href="https://wiki.dolibarr.org/index.php/Dolibarr_Project" target="_blank" rel="external">https://wiki.dolibarr.org/index.php/Dolibarr_Project</a></li>';
 print '</ul>';
 
 //print "<br>\n";
@@ -110,7 +110,7 @@ print $langs->trans("OtherInformations").':';
 
 print '<ul>';
 print '<li>';
-print '<a target="_blank" href="http://www.dolibarr.org/" rel="external">'.$langs->trans("OfficialWebSite").'</a>';
+print '<a target="_blank" href="https://www.dolibarr.org/" rel="external">'.$langs->trans("OfficialWebSite").'</a>';
 print '</li>';
 // Show local site
 if (preg_match('/^fr_/i',$langs->getDefaultLang()))
@@ -144,21 +144,21 @@ if (preg_match('/^de_/i',$langs->getDefaultLang()))
 	print '</li>';
 }
 print '<li>';
-print '<a target="_blank" href="http://wiki.dolibarr.org/" rel="external">'.$langs->trans("OfficialWiki").'</a>';
+print '<a target="_blank" href="https://wiki.dolibarr.org/" rel="external">'.$langs->trans("OfficialWiki").'</a>';
 print '</li>';
 print '</ul>';
 
 print $langs->trans("Demo").':';
 print '<ul>';
 print '<li>';
-print '<a target="_blank" href="http://www.dolibarr.org/onlinedemo/" rel="external">'.$langs->trans("OfficialDemo").'</a>';
+print '<a target="_blank" href="https://www.dolibarr.org/onlinedemo/" rel="external">'.$langs->trans("OfficialDemo").'</a>';
 print '</li>';
 print '</ul>';
 
 print $langs->trans("ModulesMarketPlaces").':';
 print '<ul>';
 print '<li>';
-print '<a target="_blank" href="http://www.dolistore.com" rel="external">'.$langs->trans("OfficialMarketPlace").'</a>';
+print '<a target="_blank" href="https://www.dolistore.com" rel="external">'.$langs->trans("OfficialMarketPlace").'</a>';
 print '</li>';
 print '</ul>';
 
@@ -178,14 +178,14 @@ print '</ul>';
 print $langs->trans("Foundation").':';
 
 print '<ul>';
-$url='http://wiki.dolibarr.org/index.php/Subscribe';
-if (preg_match('/^fr_/i',$langs->getDefaultLang())) $url='http://wiki.dolibarr.org/index.php/Adh%C3%A9rer';
-if (preg_match('/^es_/i',$langs->getDefaultLang())) $url='http://wiki.dolibarr.org/index.php/Subscribirse';
+$url='https://wiki.dolibarr.org/index.php/Subscribe';
+if (preg_match('/^fr_/i',$langs->getDefaultLang())) $url='https://wiki.dolibarr.org/index.php/Adh%C3%A9rer';
+if (preg_match('/^es_/i',$langs->getDefaultLang())) $url='https://wiki.dolibarr.org/index.php/Subscribirse';
 print '<li><a href="'.$url.'" target="_blank" rel="external">'.$langs->trans("SubscribeToFoundation").'</a></li>';
 
-print '<li><a href="http://facebook.com/dolibarr" target="_blank" rel="external">FaceBook</a></li>';
-print '<li><a href="http://twitter.com/dolibarr" target="_blank" rel="external">Twitter</a></li>';
-print '<li><a href="http://plus.google.com/+DolibarrOrg" target="_blank" rel="external">Google Plus page</a></li>';
+print '<li><a href="https://facebook.com/dolibarr" target="_blank" rel="external">FaceBook</a></li>';
+print '<li><a href="https://twitter.com/dolibarr" target="_blank" rel="external">Twitter</a></li>';
+print '<li><a href="https://plus.google.com/+DolibarrOrg" target="_blank" rel="external">Google Plus page</a></li>';
 
 print '</ul>';
 
@@ -193,13 +193,13 @@ print '</ul>';
 print $langs->trans("OtherResources").':';
 print '<ul>';
 
-$url='http://saas.dolibarr.org'; $title=$langs->trans("OfficialWebHostingService");
-if (preg_match('/^fr_/i',$langs->getDefaultLang())) $url='http://wiki.dolibarr.org/index.php/Solutions_de_Cloud';
-if (preg_match('/^es_/i',$langs->getDefaultLang())) $url='http://wiki.dolibarr.org/index.php/Soluciones_en_la_Nube';
+$url='https://saas.dolibarr.org'; $title=$langs->trans("OfficialWebHostingService");
+if (preg_match('/^fr_/i',$langs->getDefaultLang())) $url='https://wiki.dolibarr.org/index.php/Solutions_de_Cloud';
+if (preg_match('/^es_/i',$langs->getDefaultLang())) $url='https://wiki.dolibarr.org/index.php/Soluciones_en_la_Nube';
 print '<li>';
 print '<a target="_blank" href="'.$url.'" rel="external">'.$title.'</a>';
 print '</li>';
-$url='http://partners.dolibarr.org'; $title=$langs->trans("ReferencedPreferredPartners");
+$url='https://partners.dolibarr.org'; $title=$langs->trans("ReferencedPreferredPartners");
 print '<li>';
 print '<a target="_blank" href="'.$url.'" rel="external">'.$title.'</a>';
 print '</li>';