diff --git a/plugins/network/upnpc_ b/plugins/network/upnpc_
index c29022e8..21fb2e3a 100755
--- a/plugins/network/upnpc_
+++ b/plugins/network/upnpc_
@@ -166,6 +166,9 @@ case ${1:-} in
 		;;
 	"config")
 		config "${MODE}"
+		if [ "${MUNIN_CAP_DIRTYCONFIG:-0}" = "1" ]; then
+			fetch "${MODE}"
+		fi
 		;;
 	*)
 		fetch "${MODE}"