diff --git a/net/travelmate/Makefile b/net/travelmate/Makefile
index 9064560c57..4fc4088124 100644
--- a/net/travelmate/Makefile
+++ b/net/travelmate/Makefile
@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=travelmate
 PKG_VERSION:=2.4.9
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 PKG_LICENSE:=GPL-3.0-or-later
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>
 
diff --git a/net/travelmate/files/25-travelmate.hotplug b/net/travelmate/files/25-travelmate.hotplug
index ff3517577d..738db307ee 100755
--- a/net/travelmate/files/25-travelmate.hotplug
+++ b/net/travelmate/files/25-travelmate.hotplug
@@ -16,9 +16,14 @@ trm_ntplock="/var/run/travelmate/travelmate.ntp.lock"
 
 # check for ntp hotplug event and travelmate service autostart condition
 #
-if mkdir "${trm_ntplock}" 2>/dev/null; then
-	if [ "${ACTION}" = "stratum" ] && "${trm_init}" enabled; then
+case "${stratum}" in
+"") ;;
+*[!0-9]*) exit 0 ;;
+*) [ "${stratum}" -lt "16" ] || exit 0 ;;
+esac
+if [ "${ACTION}" = "stratum" ] && "${trm_init}" enabled; then
+	if mkdir "${trm_ntplock}" 2>/dev/null; then
 		. "${trm_funlib}"
-		f_log "info" "get ntp time sync"
+		f_log "info" "get ntp time sync (stratum: ${stratum:-"-"})"
 	fi
 fi
diff --git a/net/travelmate/files/travelmate-functions.sh b/net/travelmate/files/travelmate-functions.sh
index 2be1a44f7a..e4ecfbf251 100644
--- a/net/travelmate/files/travelmate-functions.sh
+++ b/net/travelmate/files/travelmate-functions.sh
@@ -75,12 +75,6 @@ f_system() {
 	#
 	[ -z "${trm_cores}" ] && trm_cores="$("${trm_grepcmd}" -cm16 '^processor' /proc/cpuinfo 2>/dev/null)"
 	case "${trm_cores}" in "" | 0 | *[!0-9]*) trm_cores="1" ;; esac
-
-	# trigger ntp sync if no lock file exists (to avoid multiple concurrent calls)
-	#
-	if [ ! -d "${trm_ntplock}" ]; then
-		"${trm_ubuscmd}" -S call hotplug.ntp call '{ "env": [ "ACTION=stratum" ] }' >/dev/null 2>&1
-	fi
 }
 
 # command selector