diff --git a/libexec/rc/rc.d/local_unbound b/libexec/rc/rc.d/local_unbound
index 0d045d918c63..858ef56dbc0d 100755
--- a/libexec/rc/rc.d/local_unbound
+++ b/libexec/rc/rc.d/local_unbound
@@ -92,7 +92,7 @@ local_unbound_prestart()
 	fi
 
 	# Retrieve DNSSEC root key
-	if [ ! -f ${local_unbound_anchor} ] ; then
+	if [ ! -s ${local_unbound_anchor} ] ; then
 		run_rc_command anchor
 	fi
 }