diff --git a/includes/polling/functions.inc.php b/includes/polling/functions.inc.php
index e82c300f1..115fc0033 100644
--- a/includes/polling/functions.inc.php
+++ b/includes/polling/functions.inc.php
@@ -26,7 +26,7 @@ function poll_sensor($device, $class, $unit)
         if ($sensor['sensor_type'] == 'apc') {
             $tmp_mib .= ':PowerNet-MIB';
         }
-        $sensor_value = trim(str_replace("\"", "", snmp_get($device, $sensor['sensor_oid'], "-OUqnv", "SNMPv2-MIB")));
+        $sensor_value = trim(str_replace("\"", "", snmp_get($device, $sensor['sensor_oid'], "-OUqnv", "$tmp_mib")));
       }
     } else if ($sensor['poller_type'] == "agent")
     {