diff --git a/CHANGELOG b/CHANGELOG
index 7b46a32..75b3195 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - base: add update-evobackup-canary script
 - base: session timeout is configurable
 - add a update-utils.yml playbook to update scripts
+- base: use a variable to define ntpd server
 
 ### Changed
 
diff --git a/roles/base/tasks/ntp.yml b/roles/base/tasks/ntp.yml
index 6c1ec61..a0f80ff 100644
--- a/roles/base/tasks/ntp.yml
+++ b/roles/base/tasks/ntp.yml
@@ -13,7 +13,7 @@
   file:
     path: /etc/ntpd.conf
     state: absent
-  when: ntpd_conf.stdout is not regex("^server ntp.evolix.net$")
+  when: ntpd_conf.stdout is not regex('^server ' + ntpd_servers + '$')
   tags:
     - ntp