diff --git a/htdocs/admin/modules.php b/htdocs/admin/modules.php
index df9632761dd..e3524425c6c 100644
--- a/htdocs/admin/modules.php
+++ b/htdocs/admin/modules.php
@@ -520,17 +520,17 @@ else
     $var=!$var;
     print "<tr ".$bc[$var].">\n";
     $url='http://www.dolistore.com';
-    print '<td align="left"><a href="'.$url.'" target="_blank"><img border="0" width="180" src="'.DOL_URL_ROOT.'/theme/dolistore_logo.png"></a></td>';
+    print '<td align="left"><a href="'.$url.'" target="_blank" rel="external"><img border="0" width="180" src="'.DOL_URL_ROOT.'/theme/dolistore_logo.png"></a></td>';
     print '<td>'.$langs->trans("DoliStoreDesc").'</td>';
-    print '<td><a href="'.$url.'" target="_blank">'.$url.'</a></td>';
+    print '<td><a href="'.$url.'" target="_blank" rel="external">'.$url.'</a></td>';
     print '</tr>';
 
     $var=!$var;
     print "<tr ".$bc[$var].">\n";
     $url='http://partners.dolibarr.org';
-    print '<td align="left"><a href="'.$url.'" target="_blank"><img border="0" width="180" src="'.DOL_URL_ROOT.'/theme/dolibarr_preferred_partner_int.png"></a></td>';
+    print '<td align="left"><a href="'.$url.'" target="_blank" rel="external"><img border="0" width="180" src="'.DOL_URL_ROOT.'/theme/dolibarr_preferred_partner_int.png"></a></td>';
     print '<td>'.$langs->trans("DoliPartnersDesc").'</td>';
-    print '<td><a href="'.$url.'" target="_blank">'.$url.'</a></td>';
+    print '<td><a href="'.$url.'" target="_blank" rel="external">'.$url.'</a></td>';
     print '</tr>';
 
     print "</table>\n";
diff --git a/htdocs/admin/system/about.php b/htdocs/admin/system/about.php
index e7490225107..532293cdad2 100644
--- a/htdocs/admin/system/about.php
+++ b/htdocs/admin/system/about.php
@@ -51,8 +51,8 @@ print '</ul>';
 
 print $langs->trans("Developpers").':';
 print '<ul>';
-print '<li>'.$langs->trans("SeeWikiForAllTeam").': <a href="http://wiki.dolibarr.org/index.php/Dolibarr_Project" target="_blank">http://wiki.dolibarr.org/index.php/Dolibarr_Project</a></li>';
-print '<li>'.$langs->trans("DoliForge").': <a href="http://www.doliforge.org" target="_blank">http://wwww.doliforge.org</a></li>';
+print '<li>'.$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("DoliForge").': <a href="http://www.doliforge.org" target="_blank" rel="external">http://wwww.doliforge.org</a></li>';
 print '</ul>';
 
 //print "<br>\n";
@@ -61,31 +61,31 @@ print $langs->trans("OtherInformations").':';
 
 print '<ul>';
 print '<li>';
-print '<a target="_blank" href="http://www.dolibarr.org/">'.$langs->trans("OfficialWebSite").'</a>';
+print '<a target="_blank" href="http://www.dolibarr.org/" rel="external">'.$langs->trans("OfficialWebSite").'</a>';
 print '</li>';
 // If the French language, it displays French website
 if (preg_match('/^fr_/i',$langs->getDefaultLang()))
 {
 	print '<li>';
-	print '<a target="_blank" href="http://www.dolibarr.fr/">'.$langs->trans("OfficialWebSiteFr").'</a>';
+	print '<a target="_blank" href="http://www.dolibarr.fr/" rel="external">'.$langs->trans("OfficialWebSiteFr").'</a>';
 	print '</li>';
 }
 print '<li>';
-print '<a target="_blank" href="http://wiki.dolibarr.org/">'.$langs->trans("OfficialWiki").'</a>';
+print '<a target="_blank" href="http://wiki.dolibarr.org/" rel="external">'.$langs->trans("OfficialWiki").'</a>';
 print '</li>';
 print '</ul>';
 
 print $langs->trans("Demo").':';
 print '<ul>';
 print '<li>';
-print '<a target="_blank" href="http://www.dolibarr.org/onlinedemo/">'.$langs->trans("OfficialDemo").'</a>';
+print '<a target="_blank" href="http://www.dolibarr.org/onlinedemo/" rel="external">'.$langs->trans("OfficialDemo").'</a>';
 print '</li>';
 print '</ul>';
 
 print $langs->trans("ModulesMarketPlaces").':';
 print '<ul>';
 print '<li>';
-print '<a target="_blank" href="http://www.dolistore.com">'.$langs->trans("OfficialMarketPlace").'</a>';
+print '<a target="_blank" href="http://www.dolistore.com" rel="external">'.$langs->trans("OfficialMarketPlace").'</a>';
 print '</li>';
 print '</ul>';
 
@@ -94,7 +94,7 @@ print $langs->trans("HelpCenter").':';
 print '<ul>';
 print '<li>';
 //print $langs->trans("SeeWikiPage",'http://wiki.dolibarr.org/index.php/List_of_OpenSource_Software_companies_and_freelancers');
-print '<a target="_blank" href="'.DOL_URL_ROOT.'/support/index.php">'.$langs->trans("HelpCenter").'</a>';
+print '<a target="_blank" href="'.DOL_URL_ROOT.'/support/index.php" data-ajax="false">'.$langs->trans("HelpCenter").'</a>';
 print '</li>';
 print '</ul>';
 
@@ -104,11 +104,11 @@ 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())) $url='http://wiki.dolibarr.org/index.php/Subscribirse';
-print '<li><a href="'.$url.'" target="_blank">'.$langs->trans("SubscribeToFoundation").'</a></li>';
+print '<li><a href="'.$url.'" target="_blank" rel="external">'.$langs->trans("SubscribeToFoundation").'</a></li>';
 
-print '<li><a href="http://facebook.com/dolibarr" target="_blank">FaceBook</a></li>';
-print '<li><a href="http://twitter.com/dolibarr" target="_blank">Twitter</a></li>';
-print '<li><a href="http://plus.google.com/+DolibarrOrg" target="_blank">Google Plus page</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 '</ul>';
 
@@ -120,11 +120,11 @@ $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())) $url='http://wiki.dolibarr.org/index.php/Soluciones_en_la_Nube';
 print '<li>';
-print '<a target="_blank" href="'.$url.'">'.$title.'</a>';
+print '<a target="_blank" href="'.$url.'" rel="external">'.$title.'</a>';
 print '</li>';
 $url='http://partners.dolibarr.org'; $title=$langs->trans("ReferencedPreferredPartners");
 print '<li>';
-print '<a target="_blank" href="'.$url.'">'.$title.'</a>';
+print '<a target="_blank" href="'.$url.'" rel="external">'.$title.'</a>';
 print '</li>';
 
 print '</ul>';