diff --git a/html/pages/device/edit/snmp.inc.php b/html/pages/device/edit/snmp.inc.php
index d6bca679a..65a541e0d 100644
--- a/html/pages/device/edit/snmp.inc.php
+++ b/html/pages/device/edit/snmp.inc.php
@@ -12,8 +12,8 @@ if ($_POST['editing'])
 
     #FIXME needs more sanity checking! and better feedback
     $update = array('community' => $_POST['community'], 'snmpver' => $_POST['snmpver'], 'port' => $_POST['port']);
-    if ($_POST['timeout']) { $update['timeout'] = $_POST['timeout']; } else { $update['timeout'] = array(NULL); }
-    if ($_POST['retries'])  { $update['retries'] = $_POST['retries']; } else { $update['retries'] = array(NULL); }
+    if ($_POST['timeout']) { $update['timeout'] = $_POST['timeout']; } else { $update['timeout'] = array('NULL'); }
+    if ($_POST['retries'])  { $update['retries'] = $_POST['retries']; } else { $update['retries'] = array('NULL'); }
 
     $rows_updated = dbUpdate($update, 'devices', '`device_id` = ?',array($device['device_id']));