diff --git a/xCAT/postscripts/setupntp b/xCAT/postscripts/setupntp
index cd8207c87..22dbca662 100755
--- a/xCAT/postscripts/setupntp
+++ b/xCAT/postscripts/setupntp
@@ -125,11 +125,7 @@ then
 	esac
 fi
 
-# Unset xCAT passed environment variables
-unset MASTER
-unset NTPSERVERS
-
-check_executes chronyd || USE_NTPD="yes"
+check_executes chronyd >/dev/null 2>&1 || USE_NTPD="yes"
 
 if [ -n "${USE_NTPD}" ]
 then
@@ -140,6 +136,10 @@ then
 	exit 255
 fi
 
+# Unset xCAT passed environment variables
+unset MASTER
+unset NTPSERVERS
+
 check_exec_or_exit cp cat logger
 check_exec_or_exit systemctl timedatectl hwclock