diff --git a/ajax/networking/get_netcfg.php b/ajax/networking/get_netcfg.php
index 8325b354..50bc637a 100644
--- a/ajax/networking/get_netcfg.php
+++ b/ajax/networking/get_netcfg.php
@@ -7,7 +7,7 @@ $interface = $_POST['iface'];
 
 if (isset($interface)) {
     // fetch dnsmasq.conf settings for interface
-    exec('cat '. RASPI_DNSMASQ_PREFIX.escapeshellarg($interface).'.conf', $return);
+    exec('cat '. escapeshellarg(RASPI_DNSMASQ_PREFIX.$interface.'.conf'), $return);
     $conf = ParseConfig($return);
 
     $dhcpdata['DHCPEnabled'] = empty($conf) ? false : true;