diff --git a/alterator-auth/sbin/system-auth b/alterator-auth/sbin/system-auth
index c8165a9..e850d6a 100755
--- a/alterator-auth/sbin/system-auth
+++ b/alterator-auth/sbin/system-auth
@@ -740,6 +740,7 @@ case "$action" in
         ad)
             if  test -n "$1" ;then
                 test -x "$net_cmd" || fatal "Cannot find $net_cmd executable required to join to Active Directory domain"
+                write_nsswitch "hosts" "files dns myhostname"
                 # Check domain name in DNS
                 check_domain_in_dns "$1" || exit 1
                 write_profile "$object"
@@ -787,4 +788,3 @@ case "$action" in
 	usage
 	;;
 esac
-