diff --git a/htdocs/website/index.php b/htdocs/website/index.php
index aa2b357a794..23be98a3b8c 100644
--- a/htdocs/website/index.php
+++ b/htdocs/website/index.php
@@ -2326,7 +2326,7 @@ if ($action == 'generatesitemaps' && $usercanedit) {
 					$domainname = $objp->virtualhost;
 				}
 				if (! preg_match('/^http/i', $domainname)) {
-					$domainname .= 'https://'.$domainname;
+					$domainname = 'https://'.$domainname;
 				}
 				//$pathofpage = $dolibarr_main_url_root.'/'.$pageurl.'.php';