diff --git a/authfd.c b/authfd.c
index 8288ef215..ae4eafb78 100644
--- a/authfd.c
+++ b/authfd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: authfd.c,v 1.124 2020/06/26 05:03:36 djm Exp $ */
+/* $OpenBSD: authfd.c,v 1.125 2020/10/19 22:49:23 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -507,7 +507,7 @@ ssh_add_identity_constrained(int sock, struct sshkey *key,
 		    SSH2_AGENTC_ADD_IDENTITY;
 		if ((r = sshbuf_put_u8(msg, type)) != 0 ||
 		    (r = sshkey_private_serialize_maxsign(key, msg, maxsign,
-		    NULL)) != 0 ||
+		    0)) != 0 ||
 		    (r = sshbuf_put_cstring(msg, comment)) != 0)
 			goto out;
 		break;
diff --git a/ssh-xmss.c b/ssh-xmss.c
index 07351034f..7bd3a96a3 100644
--- a/ssh-xmss.c
+++ b/ssh-xmss.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-xmss.c,v 1.3 2020/10/18 11:32:02 djm Exp $*/
+/* $OpenBSD: ssh-xmss.c,v 1.4 2020/10/19 22:49:23 dtucker Exp $*/
 /*
  * Copyright (c) 2017 Stefan-Lukas Gazdag.
  * Copyright (c) 2017 Markus Friedl.
@@ -62,7 +62,7 @@ ssh_xmss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
 	smlen = slen = datalen + required_siglen;
 	if ((sig = malloc(slen)) == NULL)
 		return SSH_ERR_ALLOC_FAIL;
-	if ((r = sshkey_xmss_get_state(key, error)) != 0)
+	if ((r = sshkey_xmss_get_state(key, 1)) != 0)
 		goto out;
 	if ((ret = xmss_sign(key->xmss_sk, sshkey_xmss_bds_state(key), sig, &smlen,
 	    data, datalen, sshkey_xmss_params(key))) != 0 || smlen <= datalen) {
@@ -90,7 +90,7 @@ ssh_xmss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
 	/* success */
 	r = 0;
  out:
-	if ((ret = sshkey_xmss_update_state(key, error)) != 0) {
+	if ((ret = sshkey_xmss_update_state(key, 1)) != 0) {
 		/* discard signature since we cannot update the state */
 		if (r == 0 && sigp != NULL && *sigp != NULL) {
 			explicit_bzero(*sigp, len);
diff --git a/sshkey-xmss.c b/sshkey-xmss.c
index 88e9ddf4d..c81c68963 100644
--- a/sshkey-xmss.c
+++ b/sshkey-xmss.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshkey-xmss.c,v 1.8 2019/11/13 07:53:10 markus Exp $ */
+/* $OpenBSD: sshkey-xmss.c,v 1.9 2020/10/19 22:49:23 dtucker Exp $ */
 /*
  * Copyright (c) 2017 Markus Friedl.  All rights reserved.
  *
@@ -45,6 +45,7 @@
 #include "sshkey.h"
 #include "sshkey-xmss.h"
 #include "atomicio.h"
+#include "log.h"
 
 #include "xmss_fast.h"
 
@@ -79,7 +80,7 @@ int	 sshkey_xmss_init_bds_state(struct sshkey *);
 int	 sshkey_xmss_init_enc_key(struct sshkey *, const char *);
 void	 sshkey_xmss_free_bds(struct sshkey *);
 int	 sshkey_xmss_get_state_from_file(struct sshkey *, const char *,
-	    int *, sshkey_printfn *);
+	    int *, int);
 int	 sshkey_xmss_encrypt_state(const struct sshkey *, struct sshbuf *,
 	    struct sshbuf **);
 int	 sshkey_xmss_decrypt_state(const struct sshkey *, struct sshbuf *,
@@ -87,7 +88,8 @@ int	 sshkey_xmss_decrypt_state(const struct sshkey *, struct sshbuf *,
 int	 sshkey_xmss_serialize_enc_key(const struct sshkey *, struct sshbuf *);
 int	 sshkey_xmss_deserialize_enc_key(struct sshkey *, struct sshbuf *);
 
-#define PRINT(s...) do { if (pr) pr(s); } while (0)
+#define PRINT(...) do { if (printerror) sshlog(__FILE__, __func__, __LINE__, \
+    0, SYSLOG_LEVEL_ERROR, __VA_ARGS__); } while (0)
 
 int
 sshkey_xmss_init(struct sshkey *key, const char *name)
@@ -392,7 +394,7 @@ sshkey_xmss_generate_private_key(struct sshkey *k, u_int bits)
 
 int
 sshkey_xmss_get_state_from_file(struct sshkey *k, const char *filename,
-    int *have_file, sshkey_printfn *pr)
+    int *have_file, int printerror)
 {
 	struct sshbuf *b = NULL, *enc = NULL;
 	int ret = SSH_ERR_SYSTEM_ERROR, r, fd = -1;
@@ -440,7 +442,7 @@ done:
 }
 
 int
-sshkey_xmss_get_state(const struct sshkey *k, sshkey_printfn *pr)
+sshkey_xmss_get_state(const struct sshkey *k, int printerror)
 {
 	struct ssh_xmss_state *state = k->xmss_state;
 	u_int32_t idx = 0;
@@ -493,9 +495,9 @@ sshkey_xmss_get_state(const struct sshkey *k, sshkey_printfn *pr)
 	}
 	/* XXX no longer const */
 	if ((r = sshkey_xmss_get_state_from_file((struct sshkey *)k,
-	    statefile, &have_state, pr)) != 0) {
+	    statefile, &have_state, printerror)) != 0) {
 		if ((r = sshkey_xmss_get_state_from_file((struct sshkey *)k,
-		    ostatefile, &have_ostate, pr)) == 0) {
+		    ostatefile, &have_ostate, printerror)) == 0) {
 			state->allow_update = 1;
 			r = sshkey_xmss_forward_state(k, 1);
 			state->idx = PEEK_U32(k->xmss_sk);
@@ -563,7 +565,7 @@ sshkey_xmss_forward_state(const struct sshkey *k, u_int32_t reserve)
 }
 
 int
-sshkey_xmss_update_state(const struct sshkey *k, sshkey_printfn *pr)
+sshkey_xmss_update_state(const struct sshkey *k, int printerror)
 {
 	struct ssh_xmss_state *state = k->xmss_state;
 	struct sshbuf *b = NULL, *enc = NULL;
diff --git a/sshkey-xmss.h b/sshkey-xmss.h
index b9f8ead10..bf52d293c 100644
--- a/sshkey-xmss.h
+++ b/sshkey-xmss.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshkey-xmss.h,v 1.1 2018/02/23 15:58:38 markus Exp $ */
+/* $OpenBSD: sshkey-xmss.h,v 1.2 2020/10/19 22:49:23 dtucker Exp $ */
 /*
  * Copyright (c) 2017 Markus Friedl.  All rights reserved.
  *
@@ -47,10 +47,10 @@ int	 sshkey_xmss_deserialize_pk_info(struct sshkey *, struct sshbuf *);
 int	 sshkey_xmss_siglen(const struct sshkey *, size_t *);
 void	*sshkey_xmss_params(const struct sshkey *);
 void	*sshkey_xmss_bds_state(const struct sshkey *);
-int	 sshkey_xmss_get_state(const struct sshkey *, sshkey_printfn *);
+int	 sshkey_xmss_get_state(const struct sshkey *, int);
 int	 sshkey_xmss_enable_maxsign(struct sshkey *, u_int32_t);
 int	 sshkey_xmss_forward_state(const struct sshkey *, u_int32_t);
-int	 sshkey_xmss_update_state(const struct sshkey *, sshkey_printfn *);
+int	 sshkey_xmss_update_state(const struct sshkey *, int);
 u_int32_t sshkey_xmss_signatures_left(const struct sshkey *);
 
 #endif /* SSHKEY_XMSS_H */
diff --git a/sshkey.c b/sshkey.c
index ac451f1a8..938fa0d7c 100644
--- a/sshkey.c
+++ b/sshkey.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshkey.c,v 1.111 2020/08/27 01:06:19 djm Exp $ */
+/* $OpenBSD: sshkey.c,v 1.112 2020/10/19 22:49:23 dtucker Exp $ */
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
  * Copyright (c) 2008 Alexander von Gernler.  All rights reserved.
@@ -4700,7 +4700,7 @@ sshkey_parse_pubkey_from_private_fileblob_type(struct sshbuf *blob, int type,
  */
 int
 sshkey_private_serialize_maxsign(struct sshkey *k, struct sshbuf *b,
-    u_int32_t maxsign, sshkey_printfn *pr)
+    u_int32_t maxsign, int printerror)
 {
 	int r, rupdate;
 
@@ -4708,14 +4708,14 @@ sshkey_private_serialize_maxsign(struct sshkey *k, struct sshbuf *b,
 	    sshkey_type_plain(k->type) != KEY_XMSS)
 		return sshkey_private_serialize_opt(k, b,
 		    SSHKEY_SERIALIZE_DEFAULT);
-	if ((r = sshkey_xmss_get_state(k, pr)) != 0 ||
+	if ((r = sshkey_xmss_get_state(k, printerror)) != 0 ||
 	    (r = sshkey_private_serialize_opt(k, b,
 	    SSHKEY_SERIALIZE_STATE)) != 0 ||
 	    (r = sshkey_xmss_forward_state(k, maxsign)) != 0)
 		goto out;
 	r = 0;
 out:
-	if ((rupdate = sshkey_xmss_update_state(k, pr)) != 0) {
+	if ((rupdate = sshkey_xmss_update_state(k, printerror)) != 0) {
 		if (r == 0)
 			r = rupdate;
 	}
@@ -4754,7 +4754,7 @@ sshkey_set_filename(struct sshkey *k, const char *filename)
 #else
 int
 sshkey_private_serialize_maxsign(struct sshkey *k, struct sshbuf *b,
-    u_int32_t maxsign, sshkey_printfn *pr)
+    u_int32_t maxsign, int printerror)
 {
 	return sshkey_private_serialize_opt(k, b, SSHKEY_SERIALIZE_DEFAULT);
 }
diff --git a/sshkey.h b/sshkey.h
index 2d8b62497..6d162264b 100644
--- a/sshkey.h
+++ b/sshkey.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshkey.h,v 1.46 2020/08/27 01:06:19 djm Exp $ */
+/* $OpenBSD: sshkey.h,v 1.47 2020/10/19 22:49:23 dtucker Exp $ */
 
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
@@ -267,17 +267,12 @@ int	sshkey_parse_pubkey_from_private_fileblob_type(struct sshbuf *blob,
 int ssh_rsa_complete_crt_parameters(struct sshkey *, const BIGNUM *);
 
 /* stateful keys (e.g. XMSS) */
-#ifdef NO_ATTRIBUTE_ON_PROTOTYPE_ARGS
-typedef void sshkey_printfn(const char *, ...);
-#else
-typedef void sshkey_printfn(const char *, ...) __attribute__((format(printf, 1, 2)));
-#endif
 int	 sshkey_set_filename(struct sshkey *, const char *);
 int	 sshkey_enable_maxsign(struct sshkey *, u_int32_t);
 u_int32_t sshkey_signatures_left(const struct sshkey *);
-int	 sshkey_forward_state(const struct sshkey *, u_int32_t, sshkey_printfn *);
-int	 sshkey_private_serialize_maxsign(struct sshkey *key, struct sshbuf *buf,
-    u_int32_t maxsign, sshkey_printfn *pr);
+int	 sshkey_forward_state(const struct sshkey *, u_int32_t, int);
+int	 sshkey_private_serialize_maxsign(struct sshkey *key,
+    struct sshbuf *buf, u_int32_t maxsign, int);
 
 void	 sshkey_sig_details_free(struct sshkey_sig_details *);