diff --git a/conf/includes/gl.conf.sh b/conf/includes/gl.conf.sh
index 09c7ea2..c440b25 100644
--- a/conf/includes/gl.conf.sh
+++ b/conf/includes/gl.conf.sh
@@ -16,7 +16,7 @@ export DEFAULT_SHELL="/bin/bash"
 export REMOVE_USERS="fatal"
 
 # NTP server list
-export NTPSERVERS="didicas.$REALM cagua.$REALM"
+export NTP_SERVERS="didicas.$REALM cagua.$REALM"
 
 # Ceph share
 export CEPH_SRV_NAMES="mayon pinatubo ragang taal jolo"