diff --git a/xCAT-server/lib/xcat/plugins/anaconda.pm b/xCAT-server/lib/xcat/plugins/anaconda.pm
index 5a994003d..f0bef4595 100644
--- a/xCAT-server/lib/xcat/plugins/anaconda.pm
+++ b/xCAT-server/lib/xcat/plugins/anaconda.pm
@@ -698,7 +698,7 @@ sub mknetboot
                         $xcatmasterip = $xcatmaster;
                     }
 
-                    $kcmdline .= "XCAT=$xcatmaster:$xcatdport ";
+                    $kcmdline .= "XCAT=$xcatmasterip:$xcatdport ";
 
 
             if ($rootfstype ne "ramdisk") {