Index: includes/polling/mempools/screenos.inc.php
===================================================================
--- includes/polling/mempools/screenos.inc.php  (revision 4547)
+++ includes/polling/mempools/screenos.inc.php  (working copy)
@@ -4,7 +4,7 @@
 // Yes, it really can be this simple.

 $mempool['used'] = snmp_get($device, ".1.3.6.1.4.1.3224.16.2.1.0", "-OvQ");
-$mempool['total'] = snmp_get($device, ".1.3.6.1.4.1.3224.16.2.2.0", "-OvQ");
-$mempool['free'] = $mempool['total'] - $mempool['used'];
+$mempool['free'] = snmp_get($device, ".1.3.6.1.4.1.3224.16.2.2.0", "-OvQ");
+$mempool['total'] = $mempool['used'] + $mempool['free'];

-?>
\ No newline at end of file
+/* End of file screenos.inc.php */