diff --git a/perl-xCAT/xCAT/SPD.pm b/perl-xCAT/xCAT/SPD.pm
index 957f25f54..b2dd84eb0 100755
--- a/perl-xCAT/xCAT/SPD.pm
+++ b/perl-xCAT/xCAT/SPD.pm
@@ -815,7 +815,7 @@ sub decode_spd {
             $rethash->{product}->{builddate} = sprintf("Week %x of 20%02x",$spd[323],$spd[324]);
         }
         foreach (@spd[329..348]) {
-            if ($_ & 0b10000000) {
+            if ($_ > 126 or $_ < 32) {
                 $rethash->{product}->{model}="Malformed SPD";
             }
         }