diff --git a/plugins/snmp/snmp__cyberpower b/plugins/snmp/snmp__cyberpower
index f8b592e2..71238075 100755
--- a/plugins/snmp/snmp__cyberpower
+++ b/plugins/snmp/snmp__cyberpower
@@ -178,7 +178,7 @@ sub oidExists {
 	my $oid = $_[0];
 	my $val = $session->get_single($oid);
 
-	if(!length $val || $val eq 'noSuchInstance' || $val eq 'U'){
+	if(!length $val || $val eq 'noSuchInstance' || $val eq 'U' || $val eq 'NULL'){
 		return(0);
 	}else{
 		return(1);