diff --git a/src/www/interfaces_ppps_edit.php b/src/www/interfaces_ppps_edit.php
index e32c175aa..0a34d629b 100644
--- a/src/www/interfaces_ppps_edit.php
+++ b/src/www/interfaces_ppps_edit.php
@@ -444,9 +444,9 @@ $types = array("select" => gettext("Select"), "ppp" => "PPP", "pppoe" => "PPPoE"
 										<tr style="display:none" name="portlists" id="portlists">
 											<td id="serialports"><?php
 												$selected_ports = explode(',',$pconfig['interfaces']);
-												if (!is_dir("/var/spool/lock"))
-													mwexec("/bin/mkdir -p /var/spool/lock");
-												// $serialports = pfSense_get_modem_devices();
+												if (!is_dir('/var/spool/lock')) {
+													mwexec('/bin/mkdir -p /var/spool/lock');
+												}
 												$serialports = glob("/dev/cua?[0-9]{,.[0-9]}", GLOB_BRACE);
 												$serport_count = 0;
 												foreach ($serialports as $port) {