diff --git a/tap.c b/tap.c
index 3c4a222..e36a903 100644
--- a/tap.c
+++ b/tap.c
@@ -477,8 +477,7 @@ size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n)
 		m = tap_send_frames_passt(c, iov, n);
 		break;
 	case MODE_VU:
-		m = tap_send_frames_vu(c, iov, n);
-		break;
+		ASSERT(0);
 	default:
 		m = 0;
 		break;
diff --git a/vhost_user.c b/vhost_user.c
index 9cc07c8..4ceeeb5 100644
--- a/vhost_user.c
+++ b/vhost_user.c
@@ -653,22 +653,6 @@ err:
 	return offset;
 }
 
-size_t tap_send_frames_vu(const struct ctx *c, const struct iovec *iov, size_t n)
-{
-	size_t i;
-	int ret;
-
-	debug("tap_send_frames_vu n %zd", n);
-
-	for (i = 0; i < n; i++) {
-		ret = vu_send(c, iov[i].iov_base, iov[i].iov_len);
-		if (ret < 0)
-			break;
-	}
-	debug("count %zd", i);
-	return i;
-}
-
 static void vu_handle_tx(VuDev *vdev, int index)
 {
 	struct ctx *c = (struct ctx *) ((char *)vdev - offsetof(struct ctx, vdev));
diff --git a/vhost_user.h b/vhost_user.h
index 25f0b61..44678dd 100644
--- a/vhost_user.h
+++ b/vhost_user.h
@@ -129,8 +129,6 @@ static inline bool vu_queue_started(const VuVirtq *vq)
 	return vq->started;
 }
 
-size_t tap_send_frames_vu(const struct ctx *c, const struct iovec *iov,
-			  size_t n);
 int vu_send(const struct ctx *c, const void *data, size_t len);
 void vu_print_capabilities(void);
 void vu_init(struct ctx *c);