diff --git a/usr/local/www/services_captiveportal.php b/usr/local/www/services_captiveportal.php
index 7d3f74f1e1..e295a7bd09 100755
--- a/usr/local/www/services_captiveportal.php
+++ b/usr/local/www/services_captiveportal.php
@@ -58,7 +58,7 @@ $pconfig['radmac_secret'] = $config['captiveportal']['radmac_secret'];
 $pconfig['reauthenticate'] = isset($config['captiveportal']['reauthenticate']);
 $pconfig['reauthenticateacct'] = $config['captiveportal']['reauthenticateacct'];
 $pconfig['httpslogin_enable'] = isset($config['captiveportal']['httpslogin']);
-$pconfig['httpsname'] = lcase($config['captiveportal']['httpsname']);
+$pconfig['httpsname'] = strtolower($config['captiveportal']['httpsname']);
 $pconfig['cert'] = base64_decode($config['captiveportal']['certificate']);
 $pconfig['key'] = base64_decode($config['captiveportal']['private-key']);
 $pconfig['logoutwin_enable'] = isset($config['captiveportal']['logoutwin_enable']);