diff --git a/sys/netgraph/ng_async.h b/sys/netgraph/ng_async.h
index 2cafe1908352..a91ef16c0dc6 100644
--- a/sys/netgraph/ng_async.h
+++ b/sys/netgraph/ng_async.h
@@ -71,7 +71,6 @@ struct ng_async_stat {
 /* Configuration for this node */
 struct ng_async_cfg {
 	u_char		enabled;	/* Turn encoding on/off */
-	u_char		acfcomp;	/* Address/control field compression */
 	u_int16_t	amru;		/* Max receive async frame length */
 	u_int16_t	smru;		/* Max receive sync frame length */
 	u_int32_t	accm;		/* ACCM encoding */