diff --git a/network/bluecoat/snmp/mode/hardware.pm b/network/bluecoat/snmp/mode/hardware.pm
index d9e77afff..bbe5c5b89 100644
--- a/network/bluecoat/snmp/mode/hardware.pm
+++ b/network/bluecoat/snmp/mode/hardware.pm
@@ -38,11 +38,12 @@ sub set_system {
             ['ok', 'OK'],
             ['unavailable', 'UNKNOWN'],
             ['nonoperational', 'UNKNOWN'],
+            ['unknown', 'UNKNOWN'],
         ],
         sensor => [    
             ['ok', 'OK'],
             ['unknown', 'UNKNOWN'],
-            ['nonInstalled', 'OK'],
+            ['notInstalled', 'OK'],
             ['voltageLowWarning', 'WARNING'],
             ['voltageLowCritical', 'CRITICAL'],
             ['noPower', 'CRITICAL'],
@@ -141,4 +142,4 @@ Set critical threshold for temperatures (syntax: type,instance,threshold)
 Example: --critical='sensor,.*,40'
 =back
 
-=cut
\ No newline at end of file
+=cut