diff --git a/install/install.php b/install/install.php
index a30fddf4ff..ac093a2733 100644
--- a/install/install.php
+++ b/install/install.php
@@ -16,6 +16,7 @@ if (version_compare(phpversion(), '7.2', '<')) {
 }
 
 $webSiteRootURL = @$argv[1];
+$webSiteRootURL = preg_replace("/[^0-9a-z._]/i", "", parse_url(trim($webSiteRootURL), PHP_URL_HOST));
 $databaseUser = empty($argv[2])?$databaseUser:$argv[2];
 $databasePass = empty($argv[3])?$databasePass:$argv[3];
 $systemAdminPass = empty($argv[4])?"123":$argv[4];