diff --git a/usr/local/www/services_snmp.php b/usr/local/www/services_snmp.php
index 119be42dac..19fa0d29d9 100755
--- a/usr/local/www/services_snmp.php
+++ b/usr/local/www/services_snmp.php
@@ -40,6 +40,7 @@
 ##|-PRIV
 
 require("guiconfig.inc");
+require_once("functions.inc");
 
 if (!is_array($config['snmpd'])) {
 	$config['snmpd'] = array();