diff --git a/Shorewall/functions b/Shorewall/functions
index 42bf61bbc..f388069e4 100644
--- a/Shorewall/functions
+++ b/Shorewall/functions
@@ -571,7 +571,7 @@ validate_interfaces_file() {
 		dhcp|tcpflags|arp_filter|routefilter|logmartians|sourceroute|blacklist|nosmurfs|upnp|-)
 		    ;;
 		proxyarp)
-		    lib_load proxyarp "The 'proxyarp' option"
+		    lib_load proxyarp "The 'proxyarp' option on interface $interface"
 		    ;;
 		maclist)
 		    lib_load maclist "The 'maclist' option"