diff --git a/xCAT-server/lib/xcat/plugins/xnba.pm b/xCAT-server/lib/xcat/plugins/xnba.pm
index 7fdaec0d7..b6c726302 100644
--- a/xCAT-server/lib/xcat/plugins/xnba.pm
+++ b/xCAT-server/lib/xcat/plugins/xnba.pm
@@ -272,7 +272,7 @@ sub setstate {
                 print $pcfg "imgfetch -n kernel http://" . '${next-server}/tftpboot/' . $kern->{kernel} . "\n";
                 print $pcfg "imgload kernel\n";
                 if ($kern->{kcmdline}) {
-                    print $pcfg "imgargs kernel " . $kern->{kcmdline} . ' BOOTIF=01-${netX/machyp}' . "\n";
+                    print $pcfg "imgargs kernel " . $kern->{kcmdline} . ' BOOTIF=01-${netX/mac:hexhyp}' . "\n";
                 } else {
                     print $pcfg "imgargs kernel BOOTIF=" . '${netX/mac}' . "\n";
                 }