--- local_unbound.ORIG	2018-10-23 09:10:52.005559000 +0000
+++ /etc/rc.d/local_unbound	2018-10-23 09:11:06.356306000 +0000
@@ -86,7 +86,7 @@
 	fi
 
 	# Retrieve DNSSEC root key
-	if [ ! -f ${local_unbound_anchor} ] ; then
+	if [ ! -s ${local_unbound_anchor} ] ; then
 		run_rc_command anchor
 	fi
 }