diff --git a/sys/dev/cxgb/ulp/tom/cxgb_listen.c b/sys/dev/cxgb/ulp/tom/cxgb_listen.c
index 183102036be8..9df592b4de68 100644
--- a/sys/dev/cxgb/ulp/tom/cxgb_listen.c
+++ b/sys/dev/cxgb/ulp/tom/cxgb_listen.c
@@ -922,9 +922,6 @@ t3_syncache_removed(struct toedev *tod __unused, void *arg)
 	release_synqe(synqe);
 }
 
-/* XXX */
-extern void tcp_dooptions(struct tcpopt *, u_char *, int, int);
-
 int
 t3_syncache_respond(struct toedev *tod, void *arg, struct mbuf *m)
 {