diff --git a/xCAT-test/autotest/testcase/installation/linux_diskless_installation b/xCAT-test/autotest/testcase/installation/linux_diskless_installation
index d1b2bea77..757b341e6 100644
--- a/xCAT-test/autotest/testcase/installation/linux_diskless_installation
+++ b/xCAT-test/autotest/testcase/installation/linux_diskless_installation
@@ -2,7 +2,7 @@ start:Linux_diskless_installation_flat_ppc64
 os:Linux
 cmd:rscan __GETNODEATTR($$CN,hcp)__ -w
 check:rc==0
-cmd:makedns -n
+cmd:makedns
 check:rc==0
 cmd:service named restart
 check:rc==0