diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 9250384880b..f9ff80dd366 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -975,6 +975,7 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
         // Displays meta
         print '<meta name="robots" content="noindex,nofollow">'."\n";      // Evite indexation par robots
         print '<meta name="author" content="Dolibarr Development Team">'."\n";
+		print '<meta name="viewport" content="width=device-width, initial-scale=1.0">'."\n";	// Needed for Responsive Web Design
         $favicon=dol_buildpath('/theme/'.$conf->theme.'/img/favicon.ico',1);
         if (! empty($conf->global->MAIN_FAVICON_URL)) $favicon=$conf->global->MAIN_FAVICON_URL;
         print '<link rel="shortcut icon" type="image/x-icon" href="'.$favicon.'"/>'."\n";