diff --git a/xCAT-server/lib/xcat/plugins/mknb.pm b/xCAT-server/lib/xcat/plugins/mknb.pm
index b623cda5d..d4c6ddc4d 100644
--- a/xCAT-server/lib/xcat/plugins/mknb.pm
+++ b/xCAT-server/lib/xcat/plugins/mknb.pm
@@ -45,8 +45,8 @@ sub process_request {
       $callback->({error=>"Need to specify architecture (x86, x86_64 or ppc64)"},{errorcode=>[1]});
       return;
    }
-   unless (-d "$::XCATROOT/share/xcat/netboot/$arch") {
-      $callback->({error=>"Unable to find directory $::XCATROOT/share/xcat/netboot/$arch",errorcode=>[1]});
+   unless (-d "$::XCATROOT/share/xcat/netboot/$arch" or -d "$::XCATROOT/share/xcat/netboot/genesis/$arch") {
+      $callback->({error=>"Unable to find directory $::XCATROOT/share/xcat/netboot/$arch or $::XCATROOT/share/xcat/netboot/genesis/$arch",errorcode=>[1]});
       return;
    }
    unless ( -r "/root/.ssh/id_rsa.pub" ) {