diff --git a/modules/system-administrators-guide/nav.adoc b/modules/system-administrators-guide/nav.adoc
index 8dee94c..eff6638 100644
--- a/modules/system-administrators-guide/nav.adoc
+++ b/modules/system-administrators-guide/nav.adoc
@@ -23,7 +23,6 @@
 *** xref:servers/Directory_Servers.adoc[Directory Servers]
 *** xref:servers/File_and_Print_Servers.adoc[File and Print Servers]
 *** xref:servers/Configuring_NTP_Using_the_chrony_Suite.adoc[Configuring NTP Using the chrony Suite]
-*** xref:servers/Configuring_NTP_Using_ntpd.adoc[Configuring NTP Using ntpd]
 *** xref:servers/Configuring_PTP_Using_ptp4l.adoc[Configuring PTP Using ptp4l]
 ** Monitoring and Automation
 *** xref:monitoring-and-automation/intro-monitoring-and-automation.adoc[Introduction]