diff --git a/classes/local/controllers/maintenance_static_page_generator.php b/classes/local/controllers/maintenance_static_page_generator.php
index 5cf0eba..6de8c25 100644
--- a/classes/local/controllers/maintenance_static_page_generator.php
+++ b/classes/local/controllers/maintenance_static_page_generator.php
@@ -156,25 +156,8 @@ class maintenance_static_page_generator {
             if (maintenance_static_page_io::is_url($originalurl)) {
                 $fullurl = $originalurl;
             } else if ($originalurl[0] == '/') {
-                if (strpos($CFG->wwwroot, 'http://') === 0) {
-                    $domain = substr($CFG->wwwroot, 7);
-                    if (strpos($domain, '/') > 0) {
-                        $base = substr($domain, 0, strpos($domain, '/'));
-                    } else {
-                        $base = $domain;
-                    }
-                    $fullurl = 'http://'.$base.$originalurl;
-                } else if (strpos($CFG->wwwroot, 'https://') === 0) {
-                    $domain = substr($CFG->wwwroot, 8);
-                    if (strpos($domain, '/') > 0) {
-                        $base = substr($domain, 0, strpos($domain, '/'));
-                    } else {
-                        $base = $domain;
-                    }
-                    $fullurl = 'https://'.$base.$originalurl;
-                } else {
-                    $fullurl = $CFG->wwwroot.$originalurl;
-                }
+                $rooturl = parse_url($CFG->wwwroot);
+                $fullurl = $rooturl['scheme'].'://'.$rooturl['host'].$originalurl;
             } else {
                 $fullurl = $baseref.'/'.$originalurl;
             }