diff --git a/testsite/group_vars/all.yml b/testsite/group_vars/all.yml
index d61ee26bdeecf4b23bc3df7b6288c7cc39201873..9014b2e494510d96883c08fb39c48cd5bfc4f619 100644
--- a/testsite/group_vars/all.yml
+++ b/testsite/group_vars/all.yml
@@ -84,7 +84,7 @@ prompt_colour: light_purple
 prompt_id: MAR
 
 # Set-up NTP time synchronisation.
-ntp_servers:
+ntp_pools:
   - "0.debian.pool.ntp.org"
   - "1.debian.pool.ntp.org"
   - "2.debian.pool.ntp.org"