diff --git a/common/qubes_core b/common/qubes_core
index 239a6845..45d4b7fe 100755
--- a/common/qubes_core
+++ b/common/qubes_core
@@ -71,6 +71,11 @@ start()
 
 	success
 	echo ""
+
+	type=$(/usr/bin/xenstore-read qubes_vm_type)
+	if [ "$type" == "ProxyVM" ]; then
+		/sbin/service ntpd start
+	fi
 	return 0
 }