diff --git a/xCAT-server/lib/xcat/plugins/aixinstall.pm b/xCAT-server/lib/xcat/plugins/aixinstall.pm
index 63d6514f2..f4502b0f4 100644
--- a/xCAT-server/lib/xcat/plugins/aixinstall.pm
+++ b/xCAT-server/lib/xcat/plugins/aixinstall.pm
@@ -10437,7 +10437,7 @@ sub mkdsklsnode
                 }
                 if ($needexport)
                 {
-                    my $scmd = "mknfsexp -d $install_dir -B -v 4 -g $install_dir\@$myip:$install_dir\@$remoteip -t rw -r '*'";
+                    my $scmd = "mknfsexp -d $install_dir -B -v 4 -g $install_dir\@$myip:$install_dir\@$remoteip -x -t rw -r '*'";
                     my $output = xCAT::Utils->runcmd("$scmd", -1);
                     if ($::RUNCMD_RC != 0)
                     {