diff --git a/interface/lib/classes/functions.inc.php b/interface/lib/classes/functions.inc.php
index adc365c0e03bc45e982bb8f0d9cb739da02ed6a2..7de83e995918d864800084f14bbb0e52fae2a074 100644
--- a/interface/lib/classes/functions.inc.php
+++ b/interface/lib/classes/functions.inc.php
@@ -98,7 +98,7 @@ class functions {
 	
 	public function get_ispconfig_url() {
 		$url = (stristr($_SERVER['SERVER_PROTOCOL'],'HTTPS'))?'https':'http';
-		$url .= '//'.$_SERVER['SERVER_NAME'];
+		$url .= '://'.$_SERVER['SERVER_NAME'];
 		if($_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443) {
 			$url .= ':'.$_SERVER['SERVER_PORT'];
 		}