diff --git a/xCAT-server/lib/xcat/plugins/xnba.pm b/xCAT-server/lib/xcat/plugins/xnba.pm
index bc9fdade5..e8123e6fb 100644
--- a/xCAT-server/lib/xcat/plugins/xnba.pm
+++ b/xCAT-server/lib/xcat/plugins/xnba.pm
@@ -5,6 +5,7 @@ use Sys::Syslog;
 use Socket;
 use File::Copy;
 use File::Path;
+use xCAT::Scope;
 use Getopt::Long;
 
 my $addkcmdlinehandled;